US Core Implementation Guide, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 9.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/US-Core/ and changes regularly. See the Directory of published versions

Terminology

Page standards status: Trial-use

This page lists all the ValueSets, CodeSystems, and ConceptMaps defined as part of the US Core Implementation Guide. For more information on using codes in US Core, see the FHIR Terminology section in the FHIR specification and the Coded Elements section in this guide.

US Core ValueSet and CodeSystem versions

Terminology is central to US Core. Code systems and value sets change over time, independent of or due to the US Core's annual updates. These changes include adding, deprecating, or retiring code, as well as updating code definitions. In large code systems or value sets, these changes may go unnoticed; however, for smaller enumerated terminologies, they can be obvious and lead to breaking changes.

Every published version of US Core also publishes a snapshot of the latest versions of code systems and value sets, along with their expansions, at the time of publication. However, US Core does not "pin" the terminology to a specific version of US Core, so the canonical references point to their latest versions. For example, in US Core version 6.1.0, the US Core Laboratory Test Codes link to version 6.1.0 of the ValueSet. However, its canonical URI, http://hl7.org/fhir/us/core/ValueSet/us-core-laboratory-test-codes, resolves to the latest published version of the valueset; in other words, it links to this version of US Core's valueset. The "Unpinned" terminology more accurately reflects real-world usage of US Core. When implementing US Core, implementers should use the published versions or later versions of the value sets and code systems. In some cases, implementers may need to use terminology from earlier versions to preserve legacy data.

Value Set Packages

The packages will be available by the US Core 9.0.0 publication date.

A Value Set Package contains all the expanded value sets required for an implementation guide. In addition to the packages published with US Core, annual value set packages containing value sets expanded with the updated code system versions will be available for the following US Core Versions to assist implementers who require them.

US Core 6.1.0 (published June 2023)

• US Core 6.1.0 Value Set Package - 2023-06
• US Core 6.1.0 Value Set Package - 2024-05
• US Core 6.1.0 Value Set Package - 2025-05
• US Core 6.1.0 Value Set Package - 2026-05

US Core 8.0.1 (published June 2025)

• US Core 8.0.1 Value Set Package - 2023-06
• US Core 8.0.1 Value Set Package - 2026-05

US Core 9.0.0 (published June 2026)

• US Core 9.0.0 Value Set Package - 2026-05

For more information on Value Set Package and how they are created and used, see the Value Set Package Implementation Guide

Value Sets

Most value sets used in this guide are defined in the base FHIR specification, HL7 Terminology (THO), or the Value Set Authority Center (VSAC). However, US Core also defines several value sets and they are listed below.

Value sets in US Core and C-CDA may retain inactive codes. These codes may be useful for historical queries but are not recommended for new data. Implementers should note that some code systems exclude inactive codes from current expansions; if needed, these codes may be accessible through prior expansions via terminology services. HL7 recommends validators allow non-active codes with note on their status.

• US Core Narrative Status
• US Core Clinical Note Type
• US Core Clinical Result Observation Category
• US Core Condition Codes
• US Core Diagnostic Report Category Codes
• US Core DocumentReference Category
• US Core DocumentReference Type
• US Core Goal Codes
• US Core Laboratory Test Codes
• US Core Location Type Codes
• US Core Non Laboratory Codes
• US Core Status for Smoking Status Observation
• US Core Practitioner Role Specialty Codes
• US Core Problem or Health Concern
• US Core Procedure Codes
• US Core Screening Assessment Condition Category
• US Core Screening Assessment Observation Category
• US Core Screening Assessment Observation Maximum Category
• US Core ServiceRequest Category Codes
• US Core Simple Observation Category
• US Core Specimen Condition

Value Sets Used in US Core

The following table lists all the Value sets used in US Core and where they can be found. This information is also available as a csv or excel file.

Value Set Sources:

• VSAC
• FHIR
• US CORE
• PHINVADS
• THO

Row #	Value Set	Profiles Where Used	Source
1	Common UCUM units	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	FHIR
2	ActEncounterCode	StructureDefinition/us-core-encounter	THO
3	ActPharmacySupplyType	StructureDefinition/us-core-medicationdispense	THO
4	ActPriority	StructureDefinition/us-core-encounter	THO
5	ActSubstanceAdminSubstitutionCode	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	THO
6	AddressType	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-location StructureDefinition/us-core-organization	FHIR
7	AddressUse	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-location StructureDefinition/us-core-organization	FHIR
8	AdministrativeGender	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-familymemberhistory StructureDefinition/us-core-relatedperson	FHIR
9	Admit source	StructureDefinition/us-core-encounter	FHIR
10	Advance Healthcare Directive Categories LOINC	StructureDefinition/us-core-adi-documentreference	VSAC
11	Advance Healthcare Directive Document Types Grouper	StructureDefinition/us-core-adi-documentreference	VSAC
12	Allergen Concepts (Medications	and Environmental Substances) including refutations.	VSAC
13	AllergyIntolerance Clinical Status Codes	StructureDefinition/us-core-allergyintolerance	FHIR
14	AllergyIntolerance Verification Status Codes	StructureDefinition/us-core-allergyintolerance	FHIR
15	AllergyIntoleranceCategory	StructureDefinition/us-core-allergyintolerance	FHIR
16	AllergyIntoleranceCriticality	StructureDefinition/us-core-allergyintolerance	FHIR
17	AllergyIntoleranceSeverity	StructureDefinition/us-core-allergyintolerance	FHIR
18	AllergyIntoleranceType	StructureDefinition/us-core-allergyintolerance	FHIR
19	Answer Set with Yes No and Unknowns	StructureDefinition/us-core-interpreter-needed StructureDefinition/us-core-observation-adi-documentation	VSAC
20	Birth Sex	StructureDefinition/us-core-birthsex	VSAC
21	Body Length Units	StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height	FHIR
22	Body Temperature Units	StructureDefinition/us-core-body-temperature	FHIR
23	Body Weight Units	StructureDefinition/us-core-body-weight	FHIR
24	CMS Place of Service Codes (POS)	ValueSet/us-core-location-type	THO
25	CVX Vaccines Administered Vaccine Set	StructureDefinition/us-core-immunization	VSAC
26	Care Plan Activity Kind	StructureDefinition/us-core-careplan	FHIR
27	Care Plan Activity Outcome	StructureDefinition/us-core-careplan	FHIR
28	Care Plan Category	StructureDefinition/us-core-careplan	FHIR
29	Care Plan Intent	StructureDefinition/us-core-careplan	FHIR
30	Care Team Member Function	ValueSet/us-core-practitionerrole-specialty StructureDefinition/us-core-careteam StructureDefinition/us-core-practitionerrole	VSAC
31	Care Team category	StructureDefinition/us-core-careteam	FHIR
32	CarePlanActivityStatus	StructureDefinition/us-core-careplan	FHIR
33	CareTeamStatus	StructureDefinition/us-core-careteam	FHIR
34	Codes for Immunization Site of Administration	StructureDefinition/us-core-immunization	FHIR
35	Common Languages	StructureDefinition/us-core-specimen StructureDefinition/us-core-documentreference StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/us-core-procedure StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-careplan StructureDefinition/us-core-organization StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-practitioner StructureDefinition/us-core-practitionerrole StructureDefinition/us-core-body-height StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-patient StructureDefinition/us-core-provenance StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-body-temperature StructureDefinition/us-core-questionnaireresponse StructureDefinition/us-core-condition-encounter-diagnosis StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-medicationdispense StructureDefinition/us-core-device StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-diagnosticreport-lab StructureDefinition/us-core-encounter StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-coverage StructureDefinition/us-core-servicerequest StructureDefinition/us-core-simple-observation StructureDefinition/us-core-diagnosticreport-note StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medication StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-goal StructureDefinition/us-core-careteam StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-familymemberhistory StructureDefinition/us-core-immunization StructureDefinition/us-core-relatedperson StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-location StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-allergyintolerance StructureDefinition/us-core-blood-pressure	FHIR
36	Common Tags	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-diagnosticreport-lab StructureDefinition/us-core-encounter StructureDefinition/us-core-observation-lab	FHIR
37	CompositionStatus	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	FHIR
38	Condition Category Codes	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-condition-encounter-diagnosis	FHIR
39	Condition Clinical Status Codes	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-condition-encounter-diagnosis	FHIR
40	Condition Outcome Codes	StructureDefinition/us-core-familymemberhistory	FHIR
41	Condition Stage	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-condition-encounter-diagnosis	FHIR
42	Condition Stage Type	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-condition-encounter-diagnosis	FHIR
43	Condition/Diagnosis Severity	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-condition-encounter-diagnosis	FHIR
44	Condition/Problem/Diagnosis Codes	StructureDefinition/us-core-procedure	FHIR
45	ConditionVerificationStatus	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-condition-encounter-diagnosis	FHIR
46	Contact entity type	StructureDefinition/us-core-organization	FHIR
47	ContactPointSystem	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-practitionerrole StructureDefinition/us-core-organization	FHIR
48	ContactPointUse	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-practitionerrole StructureDefinition/us-core-organization	FHIR
49	Coverage Class Codes	StructureDefinition/us-core-coverage	FHIR
50	Coverage Copay Type Codes	StructureDefinition/us-core-coverage	FHIR
51	DataAbsentReason	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-simple-observation StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-blood-pressure	FHIR
52	DaysOfWeek	StructureDefinition/us-core-practitionerrole StructureDefinition/us-core-location	FHIR
53	Detailed Ethnicity Including Absence Reasons	StructureDefinition/us-core-ethnicity	VSAC
54	Detailed race including absence reasons.	StructureDefinition/us-core-race	VSAC
55	DeviceNameType	StructureDefinition/us-core-device	FHIR
56	DiagnosisRole	StructureDefinition/us-core-encounter	FHIR
57	Diagnostic Service Section Codes	StructureDefinition/us-core-diagnosticreport-note StructureDefinition/us-core-diagnosticreport-lab	FHIR
58	DiagnosticReportStatus	StructureDefinition/us-core-diagnosticreport-note StructureDefinition/us-core-diagnosticreport-lab	FHIR
59	Diet	StructureDefinition/us-core-encounter	FHIR
60	Document Class Value Set	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	FHIR
61	Document Type Value Set	OperationDefinition/docref	FHIR
62	DocumentReferenceStatus	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	FHIR
63	DocumentRelationshipType	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	FHIR
64	DoseAndRateType	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	FHIR
65	Encounter Reason Codes	StructureDefinition/us-core-encounter	FHIR
66	Encounter Type	StructureDefinition/us-core-encounter	VSAC
67	EncounterLocationStatus	StructureDefinition/us-core-encounter	FHIR
68	EncounterStatus	StructureDefinition/us-core-encounter	FHIR
69	Ethnicity Categories	StructureDefinition/us-core-ethnicity	VSAC
70	EventStatus	StructureDefinition/us-core-procedure	FHIR
71	Example Coverage Financial Exception Codes	StructureDefinition/us-core-coverage	FHIR
72	FHIR Device Types	StructureDefinition/us-core-procedure StructureDefinition/us-core-device	FHIR
73	FHIR Specimen Collection Method	StructureDefinition/us-core-specimen	FHIR
74	FHIRDeviceStatus	StructureDefinition/us-core-device	FHIR
75	FHIRDeviceStatusReason	StructureDefinition/us-core-device	FHIR
76	Facility Type Code Value Set	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	FHIR
77	Family Member Value	StructureDefinition/us-core-familymemberhistory	VSAC
78	FamilyHistoryAbsentReason	StructureDefinition/us-core-familymemberhistory	FHIR
79	FamilyHistoryStatus	StructureDefinition/us-core-familymemberhistory	FHIR
80	Federal Administrative Sex	StructureDefinition/us-core-individual-sex	VSAC
81	Financial Resource Status Codes	StructureDefinition/us-core-coverage	FHIR
82	Gender Identity	StructureDefinition/us-core-genderIdentity	VSAC
83	Goal achievement status	StructureDefinition/us-core-goal	FHIR
84	Goal category	StructureDefinition/us-core-goal	FHIR
85	Goal priority	StructureDefinition/us-core-goal	FHIR
86	Goal start event	StructureDefinition/us-core-goal	FHIR
87	GoalLifecycleStatus	StructureDefinition/us-core-goal	FHIR
88	HL7 ValueSet of Format Codes for use with Document Sharing	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	THO
89	Healthcare Service Location Type Combined	ValueSet/us-core-location-type	VSAC
90	IdentifierType	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-encounter StructureDefinition/us-core-coverage StructureDefinition/us-core-organization	FHIR
91	IdentifierUse	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-encounter StructureDefinition/us-core-coverage StructureDefinition/us-core-organization	FHIR
92	Immunization Function Codes	StructureDefinition/us-core-immunization	FHIR
93	Immunization Funding Source	StructureDefinition/us-core-immunization	FHIR
94	Immunization Origin Codes	StructureDefinition/us-core-immunization	FHIR
95	Immunization Program Eligibility	StructureDefinition/us-core-immunization	FHIR
96	Immunization Reason Codes	StructureDefinition/us-core-immunization	FHIR
97	Immunization Route Codes	StructureDefinition/us-core-immunization	FHIR
98	Immunization Status Codes	StructureDefinition/us-core-immunization	FHIR
99	Immunization Status Reason Codes	StructureDefinition/us-core-immunization	FHIR
100	Immunization Subpotent Reason	StructureDefinition/us-core-immunization	FHIR
101	Immunization Target Disease Codes	StructureDefinition/us-core-immunization	FHIR
102	Industry NAICS Detail (ODH)	StructureDefinition/us-core-observation-occupation	PHINVADS
103	Information Source for Medication Adherence	StructureDefinition/us-core-medication-adherence	VSAC
104	LOINC Codes	StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-goal StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/us-core-observation-lab StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-simple-observation StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-observation-adi-documentation	FHIR
105	Languages	StructureDefinition/us-core-patient	THO
106	LinkType	StructureDefinition/us-core-patient	FHIR
107	Location type	StructureDefinition/us-core-encounter StructureDefinition/us-core-location	FHIR
108	LocationMode	StructureDefinition/us-core-location	FHIR
109	LocationStatus	StructureDefinition/us-core-location	FHIR
110	Manifestation and Symptom Codes	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-condition-encounter-diagnosis	FHIR
111	MaritalStatus	StructureDefinition/us-core-patient	FHIR
112	Medication status codes	StructureDefinition/us-core-medication	FHIR
113	Medication Adherence	StructureDefinition/us-core-medication-adherence	VSAC
114	Medication Clinical Drug	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medication StructureDefinition/us-core-medicationdispense	VSAC
115	Medication dispense category codes	StructureDefinition/us-core-medicationdispense	FHIR
116	Medication dispense performer function codes	StructureDefinition/us-core-medicationdispense	FHIR
117	Medication dispense status codes	StructureDefinition/us-core-medicationdispense	FHIR
118	Medication dispense status reason codes	StructureDefinition/us-core-medicationdispense	FHIR
119	Medication request category codes	StructureDefinition/us-core-medicationrequest	FHIR
120	Medication request course of therapy codes	StructureDefinition/us-core-medicationrequest	FHIR
121	Medication request intent	StructureDefinition/us-core-medicationrequest	FHIR
122	Medication request status reason codes	StructureDefinition/us-core-medicationrequest	FHIR
123	Medicationrequest status	StructureDefinition/us-core-medicationrequest	FHIR
124	MimeType	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	FHIR
125	NameUse	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient	FHIR
126	Observation Category Codes	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-observation-clinical-result StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-vital-signs StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-body-height StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-blood-pressure	FHIR
127	Observation Interpretation Codes	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-simple-observation StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-blood-pressure	FHIR
128	Observation Methods	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-simple-observation StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-blood-pressure	FHIR
129	Observation Reference Range Applies To Codes	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-simple-observation StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-blood-pressure	FHIR
130	Observation Reference Range Meaning Codes	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-simple-observation StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-blood-pressure	FHIR
131	ObservationStatus	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-simple-observation StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-blood-pressure	FHIR
132	Occupation ONETSOC Detail (ODH)	StructureDefinition/us-core-observation-occupation	PHINVADS
133	Organization type	StructureDefinition/us-core-organization	FHIR
134	Participant Roles	StructureDefinition/us-core-servicerequest	FHIR
135	Participant type	StructureDefinition/us-core-encounter	FHIR
136	Patient Contact Relationship	StructureDefinition/us-core-patient	FHIR
137	Payer Type	StructureDefinition/us-core-coverage	VSAC
138	Personal And Legal Relationship Role Type	StructureDefinition/us-core-relatedperson	VSAC
139	Practice Setting Code Value Set	StructureDefinition/us-core-adi-documentreference ValueSet/us-core-practitionerrole-specialty StructureDefinition/us-core-documentreference	FHIR
140	Pregnancy Intention	StructureDefinition/us-core-observation-pregnancyintent	VSAC
141	Pregnancy Status Observation	StructureDefinition/us-core-observation-pregnancystatus	VSAC
142	Procedure Category Codes (SNOMED CT)	StructureDefinition/us-core-procedure	FHIR
143	Procedure Codes (SNOMED CT)	StructureDefinition/us-core-careplan	FHIR
144	Procedure Device Action Codes	StructureDefinition/us-core-procedure	FHIR
145	Procedure Follow up Codes (SNOMED CT)	StructureDefinition/us-core-procedure	FHIR
146	Procedure Not Performed Reason (SNOMED-CT)	StructureDefinition/us-core-procedure	FHIR
147	Procedure Outcome Codes (SNOMED CT)	StructureDefinition/us-core-procedure	FHIR
148	Procedure Performer Role Codes	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-procedure	FHIR
149	Provenance activity type	StructureDefinition/us-core-provenance	FHIR
150	Provenance participant type	StructureDefinition/us-core-provenance	THO
151	ProvenanceEntityRole	StructureDefinition/us-core-provenance	FHIR
152	PurposeOfUse	StructureDefinition/us-core-provenance	THO
153	QuantityComparator	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-bmi StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-body-temperature StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-body-height StructureDefinition/us-core-blood-pressure	FHIR
154	Questionnaire Answer Codes	StructureDefinition/us-core-questionnaireresponse	FHIR
155	QuestionnaireResponseStatus	StructureDefinition/us-core-questionnaireresponse	FHIR
156	Race Categories	StructureDefinition/us-core-race	VSAC
157	Request priority	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-servicerequest	FHIR
158	RequestIntent	StructureDefinition/us-core-servicerequest	FHIR
159	RequestStatus	StructureDefinition/us-core-careplan StructureDefinition/us-core-servicerequest	FHIR
160	ResourceType	StructureDefinition/us-core-provenance StructureDefinition/us-core-questionnaireresponse	FHIR
161	Route of Administration of Therapeutic Agents	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	VSAC
162	SNOMED CT Additional Dosage Instructions	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	FHIR
163	SNOMED CT Administration Method Codes	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	FHIR
164	SNOMED CT Anatomical Structure for Administration Site Codes	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	FHIR
165	SNOMED CT Body Structures	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-specimen StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-observation-pregnancyintent StructureDefinition/us-core-procedure StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-bmi StructureDefinition/us-core-observation-lab StructureDefinition/us-core-vital-signs StructureDefinition/us-core-servicerequest StructureDefinition/us-core-simple-observation StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/us-core-body-height StructureDefinition/us-core-smokingstatus StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-observation-clinical-result StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-observation-screening-assessment StructureDefinition/us-core-body-temperature StructureDefinition/us-core-condition-encounter-diagnosis StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-body-weight StructureDefinition/us-core-observation-pregnancystatus StructureDefinition/us-core-observation-occupation StructureDefinition/us-core-average-blood-pressure StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-sexual-orientation StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-blood-pressure	FHIR
166	SNOMED CT Clinical Findings	StructureDefinition/us-core-diagnosticreport-note StructureDefinition/us-core-diagnosticreport-lab StructureDefinition/us-core-careteam StructureDefinition/us-core-goal StructureDefinition/us-core-careplan StructureDefinition/us-core-allergyintolerance StructureDefinition/us-core-familymemberhistory	FHIR
167	SNOMED CT Form Codes	StructureDefinition/us-core-medication	FHIR
168	SNOMED CT Medication As Needed Reason Codes	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense StructureDefinition/us-core-servicerequest	FHIR
169	SNOMED CT Medication Codes	StructureDefinition/us-core-careplan	FHIR
170	SNOMED CT Route Codes	StructureDefinition/us-core-allergyintolerance	FHIR
171	Screening and Assessment Survey Codes	StructureDefinition/us-core-observation-screening-assessment	VSAC
172	SecurityLabels	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-diagnosticreport-lab StructureDefinition/us-core-documentreference StructureDefinition/us-core-encounter StructureDefinition/us-core-observation-lab	FHIR
173	SecurityRoleType	StructureDefinition/us-core-provenance	FHIR
174	Service Request Category Codes	ValueSet/us-core-servicerequest-category StructureDefinition/us-core-servicerequest	FHIR
175	Service Request Order Details Codes	StructureDefinition/us-core-servicerequest	FHIR
176	Service type	StructureDefinition/us-core-encounter	FHIR
177	ServiceDeliveryLocationRoleType	ValueSet/us-core-location-type StructureDefinition/us-core-servicerequest	THO
178	Sex	StructureDefinition/us-core-sex	VSAC
179	Sexual Orientation Including nulls and Data Absent Reason	StructureDefinition/us-core-observation-sexual-orientation	VSAC
180	Smoking Status Type	StructureDefinition/us-core-smokingstatus	VSAC
181	Smoking status comprehensive	StructureDefinition/us-core-smokingstatus	VSAC
182	Special arrangements	StructureDefinition/us-core-encounter	FHIR
183	Special courtesy	StructureDefinition/us-core-encounter	FHIR
184	Specimen Condition SCT	ValueSet/us-core-specimen-condition	VSAC
185	Specimen Container Type	StructureDefinition/us-core-specimen	FHIR
186	Specimen processing procedure	StructureDefinition/us-core-specimen	FHIR
187	Specimen type	StructureDefinition/us-core-specimen	VSAC
188	SpecimenStatus	StructureDefinition/us-core-specimen	FHIR
189	SubscriberPolicyholder Relationship Codes	StructureDefinition/us-core-coverage	FHIR
190	Substance Code	StructureDefinition/us-core-allergyintolerance	FHIR
191	SubstanceAdminSubstitutionReason	StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-medicationdispense	THO
192	TribalEntityUS	StructureDefinition/us-core-tribal-affiliation	THO
193	UDIEntryType	StructureDefinition/us-core-device	FHIR
194	US Core Clinical Note Type		US CORE
195	US Core Clinical Result Observation Category	StructureDefinition/us-core-observation-lab StructureDefinition/us-core-observation-clinical-result	US CORE
196	US Core Condition Codes	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-medicationrequest StructureDefinition/us-core-procedure StructureDefinition/us-core-servicerequest StructureDefinition/us-core-condition-encounter-diagnosis StructureDefinition/us-core-familymemberhistory	US CORE
197	US Core Diagnostic Report Category Codes	StructureDefinition/us-core-diagnosticreport-note	US CORE
198	US Core DocumentReference Category	StructureDefinition/us-core-documentreference	US CORE
199	US Core DocumentReference Type	StructureDefinition/us-core-documentreference	US CORE
200	US Core Goal Codes	StructureDefinition/us-core-goal	US CORE
201	US Core Laboratory Test Codes	StructureDefinition/us-core-diagnosticreport-lab StructureDefinition/us-core-observation-lab	US CORE
202	US Core Location Type Codes	StructureDefinition/us-core-location	US CORE
203	US Core Narrative Status	StructureDefinition/us-core-careplan	US CORE
204	US Core Non Laboratory Codes	StructureDefinition/us-core-diagnosticreport-note	US CORE
205	US Core Practitioner Role Specialty Codes	StructureDefinition/us-core-practitionerrole	US CORE
206	US Core Problem or Health Concern	StructureDefinition/us-core-condition-problems-health-concerns	US CORE
207	US Core Procedure Codes	StructureDefinition/us-core-procedure StructureDefinition/us-core-servicerequest	US CORE
208	US Core Screening Assessment Condition Category		US CORE
209	US Core Screening Assessment Observation Category	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-observation-screening-assessment	US CORE
210	US Core Screening Assessment Observation Maximum Category	StructureDefinition/us-core-observation-screening-assessment	US CORE
211	US Core ServiceRequest Category Codes	StructureDefinition/us-core-servicerequest	US CORE
212	US Core Simple Observation Category	StructureDefinition/us-core-condition-problems-health-concerns StructureDefinition/us-core-care-experience-preference StructureDefinition/us-core-treatment-intervention-preference StructureDefinition/us-core-observation-adi-documentation StructureDefinition/us-core-simple-observation	US CORE
213	US Core Specimen Condition	StructureDefinition/us-core-specimen	US CORE
214	US Core Status for Smoking Status Observation	StructureDefinition/us-core-smokingstatus	US CORE
215	USEncounterDischargeDisposition	StructureDefinition/us-core-encounter	THO
216	USPS Two Letter Alphabetic Codes	StructureDefinition/us-core-practitioner StructureDefinition/us-core-patient StructureDefinition/us-core-location StructureDefinition/us-core-jurisdiction StructureDefinition/us-core-organization	THO
217	UnitsOfMeasureCaseSensitive	StructureDefinition/us-core-smokingstatus	THO
218	Vital Sign Result Type	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-bmi StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-body-temperature StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-vital-signs StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-body-height StructureDefinition/us-core-blood-pressure	VSAC
219	Vital Signs Units	StructureDefinition/pediatric-bmi-for-age StructureDefinition/us-core-pulse-oximetry StructureDefinition/us-core-bmi StructureDefinition/head-occipital-frontal-circumference-percentile StructureDefinition/us-core-body-temperature StructureDefinition/us-core-respiratory-rate StructureDefinition/us-core-vital-signs StructureDefinition/us-core-heart-rate StructureDefinition/us-core-head-circumference StructureDefinition/pediatric-weight-for-height StructureDefinition/us-core-body-weight StructureDefinition/us-core-body-height StructureDefinition/us-core-blood-pressure	FHIR
220	hl7VS-additivePreservative	StructureDefinition/us-core-specimen	THO
221	hl7VS-bedStatus	StructureDefinition/us-core-location	THO
222	hl7VS-re-admissionIndicator	StructureDefinition/us-core-encounter	THO
223	hl7VS-relevantClincialInformation	StructureDefinition/us-core-specimen	THO
224	hl7VS-specimenCondition	ValueSet/us-core-specimen-condition	THO
225	v2 table 0360	FHIR Value set/code system definition for HL7 v2 table 0360 ver 2.9 ( Degree/License/Certificate)	THO
226	v3 Code System ActCode	StructureDefinition/us-core-adi-documentreference StructureDefinition/us-core-documentreference	THO

Code Systems

See the FHIR terminology section for a complete discussion on code systems and a list of code system names used in FHIR. Most code systems used in this guide are defined in the base FHIR specification or HL7 Terminology (THO). However, the following code systems are unique to this guide and not listed in the base FHIR specification. If a URI is listed here, it SHALL be used in the US Core profiles to identify the code system in preference to any other code system URI.

US Core Defined Code Systems

• US Core CarePlan Category Extension Codes
• US Core Category
• US Core Condition Category Extension Codes
• US Core DocumentReferences Category Codes

Code System Used in US Core

The following table lists all the CodeSystems used in US Core and where they can be found. This information is also available as a csv or excel file.

Code System Sources:

• FHIR
• US CORE
• THO
• SNOMED
• LOINC
• UCUM
• CDC
• Code systems published by other standards organizations

Row #	Code System	Code System URI	Value Sets Where Used	Source
1	AHA NUBC Patient Discharge Status Codes	https://www.nubc.org/CodeSystem/PatDischargeStatus	ValueSet/v3-USEncounterDischargeDisposition	Other
2	ActCode	http://terminology.hl7.org/CodeSystem/v3-ActCode	ValueSet/v3-ActPharmacySupplyType ValueSet/v3-ActCode ValueSet/provenance-activity-type ValueSet/v3-ActEncounterCode	THO
3	ActPriority	http://terminology.hl7.org/CodeSystem/v3-ActPriority	ValueSet/v3-ActPriority	THO
4	ActReason	http://terminology.hl7.org/CodeSystem/v3-ActReason	ValueSet/immunization-status-reason ValueSet/v3-PurposeOfUse ValueSet/v3-SubstanceAdminSubstitutionReason	THO
5	ActSite	http://terminology.hl7.org/CodeSystem/v3-ActSite	ValueSet/immunization-site	THO
6	AddressType	http://hl7.org/fhir/address-type	ValueSet/address-type	FHIR
7	AddressUse	http://hl7.org/fhir/address-use	ValueSet/address-use	FHIR
8	AdministrativeGender	http://hl7.org/fhir/administrative-gender	ValueSet/administrative-gender	FHIR
9	Admit source	http://terminology.hl7.org/CodeSystem/admit-source	ValueSet/encounter-admit-source	THO
10	Allergy Intolerance Category	http://hl7.org/fhir/allergy-intolerance-category	ValueSet/allergy-intolerance-category	FHIR
11	Allergy Intolerance Criticality	http://hl7.org/fhir/allergy-intolerance-criticality	ValueSet/allergy-intolerance-criticality	FHIR
12	Allergy Intolerance Severity	http://hl7.org/fhir/reaction-event-severity	ValueSet/reaction-event-severity	FHIR
13	Allergy Intolerance Type	http://hl7.org/fhir/allergy-intolerance-type	ValueSet/allergy-intolerance-type	FHIR
14	AllergyIntolerance Clinical Status Codes	http://terminology.hl7.org/CodeSystem/allergyintolerance-clinical	ValueSet/allergyintolerance-clinical	THO
15	AllergyIntolerance Verification Status	http://terminology.hl7.org/CodeSystem/allergyintolerance-verification	ValueSet/allergyintolerance-verification	THO
16	Care Team Status	http://hl7.org/fhir/care-team-status	ValueSet/care-team-status	FHIR
17	CarePlanActivityStatus	http://hl7.org/fhir/care-plan-activity-status	ValueSet/care-plan-activity-status	FHIR
18	Code on Dental Procedures and Nomenclature	http://www.ada.org/cdt	ValueSet/us-core-procedure-code	Other
19	Common Tags	http://terminology.hl7.org/CodeSystem/common-tags	ValueSet/common-tags	THO
20	Composition Status	http://hl7.org/fhir/composition-status	ValueSet/composition-status	FHIR
21	Condition Category Codes	http://terminology.hl7.org/CodeSystem/condition-category	ValueSet/condition-category ValueSet/us-core-problem-or-health-concern	THO
22	Condition Clinical Status Codes	http://terminology.hl7.org/CodeSystem/condition-clinical	ValueSet/condition-clinical	THO
23	ConditionVerificationStatus	http://terminology.hl7.org/CodeSystem/condition-ver-status	ValueSet/condition-ver-status	THO
24	Contact entity type	http://terminology.hl7.org/CodeSystem/contactentity-type	ValueSet/contactentity-type	THO
25	ContactPointSystem	http://hl7.org/fhir/contact-point-system	ValueSet/contact-point-system	FHIR
26	ContactPointUse	http://hl7.org/fhir/contact-point-use	ValueSet/contact-point-use	FHIR
27	Contract Signer Type Codes	http://terminology.hl7.org/CodeSystem/contractsignertypecodes	ValueSet/security-role-type	THO
28	Coverage Class Codes	http://terminology.hl7.org/CodeSystem/coverage-class	ValueSet/coverage-class	THO
29	Coverage Copay Type Codes	http://terminology.hl7.org/CodeSystem/coverage-copay-type	ValueSet/coverage-copay-type	THO
30	Current Procedural Terminology (CPT®)	http://www.ama-assn.org/go/cpt	ValueSet/us-core-procedure-code	Other
31	DICOM Controlled Terminology	http://dicom.nema.org/resources/ontology/DCM	ValueSet/security-role-type	Other
32	DataAbsentReason	http://terminology.hl7.org/CodeSystem/data-absent-reason	ValueSet/data-absent-reason	THO
33	DataOperation	http://terminology.hl7.org/CodeSystem/v3-DataOperation	ValueSet/provenance-activity-type	THO
34	Days Of Week	http://hl7.org/fhir/days-of-week	ValueSet/days-of-week	FHIR
35	Device Name Type	http://hl7.org/fhir/device-nametype	ValueSet/device-nametype	FHIR
36	Diagnosis Role	http://terminology.hl7.org/CodeSystem/diagnosis-role	ValueSet/diagnosis-role	THO
37	Diagnostic Report Status	http://hl7.org/fhir/diagnostic-report-status	ValueSet/diagnostic-report-status	FHIR
38	Diet	http://terminology.hl7.org/CodeSystem/diet	ValueSet/encounter-diet	THO
39	Document Relationship Type	http://hl7.org/fhir/document-relationship-type	ValueSet/document-relationship-type	FHIR
40	DocumentCompletion	http://terminology.hl7.org/CodeSystem/v3-DocumentCompletion	ValueSet/provenance-activity-type	THO
41	DocumentReferenceStatus	http://hl7.org/fhir/document-reference-status	ValueSet/document-reference-status	FHIR
42	DoseAndRateType	http://terminology.hl7.org/CodeSystem/dose-rate-type	ValueSet/dose-rate-type	THO
43	Encounter Location Status	http://hl7.org/fhir/encounter-location-status	ValueSet/encounter-location-status	FHIR
44	Encounter Status	http://hl7.org/fhir/encounter-status	ValueSet/encounter-status	FHIR
45	EncounterSpecialCourtesy	http://terminology.hl7.org/CodeSystem/v3-EncounterSpecialCourtesy	ValueSet/encounter-special-courtesy	THO
46	EventStatus	http://hl7.org/fhir/event-status	ValueSet/immunization-status ValueSet/event-status	FHIR
47	Example Coverage Financial Exception Codes	http://terminology.hl7.org/CodeSystem/ex-coverage-financial-exception	ValueSet/coverage-financial-exception	THO
48	FHIR Device Status	http://hl7.org/fhir/device-status	ValueSet/device-status	FHIR
49	FHIRDeviceStatusReason	http://terminology.hl7.org/CodeSystem/device-status-reason	ValueSet/device-status-reason	THO
50	Family History Status	http://hl7.org/fhir/history-status	ValueSet/history-status	FHIR
51	FamilyHistoryAbsentReason	http://terminology.hl7.org/CodeSystem/history-absent-reason	ValueSet/history-absent-reason	THO
52	Financial Resource Status Codes	http://hl7.org/fhir/fm-status	ValueSet/fm-status	FHIR
53	Goal Lifecycle Status	http://hl7.org/fhir/goal-status	ValueSet/goal-status	FHIR
54	Goal achievement status	http://terminology.hl7.org/CodeSystem/goal-achievement	ValueSet/goal-achievement	THO
55	Goal category	http://terminology.hl7.org/CodeSystem/goal-category	ValueSet/goal-category	THO
56	Goal priority	http://terminology.hl7.org/CodeSystem/goal-priority	ValueSet/goal-priority	THO
57	HL7 Document Format Codes	http://terminology.hl7.org/CodeSystem/v3-HL7DocumentFormatCodes	ValueSet/v3-HL7FormatCodes	THO
58	Healthcare Common Procedure Coding System (HCPCS) level II alphanumeric codes	http://www.cms.gov/Medicare/Coding/HCPCSReleaseCodeSets	ValueSet/us-core-procedure-code	Other
59	ICD-10 Procedure Codes	http://www.cms.gov/Medicare/Coding/ICD10	ValueSet/us-core-procedure-code	Other
60	ICD-9-CM (procedure codes)	http://hl7.org/fhir/sid/icd-9-cm	ValueSet/us-core-condition-code	CDC
61	IHE Format Code set for use with Document Sharing	http://ihe.net/fhir/ihe.formatcode.fhir/CodeSystem/formatcode	ValueSet/v3-HL7FormatCodes	Other
62	IdentifierUse	http://hl7.org/fhir/identifier-use	ValueSet/identifier-use	FHIR
63	Immunization Funding Source	http://terminology.hl7.org/CodeSystem/immunization-funding-source	ValueSet/immunization-funding-source	THO
64	Immunization Origin Codes	http://terminology.hl7.org/CodeSystem/immunization-origin	ValueSet/immunization-origin	THO
65	Immunization Program Eligibility	http://terminology.hl7.org/CodeSystem/immunization-program-eligibility	ValueSet/immunization-program-eligibility	THO
66	Immunization Subpotent Reason	http://terminology.hl7.org/CodeSystem/immunization-subpotent-reason	ValueSet/immunization-subpotent-reason	THO
67	International Classification of Diseases	http://hl7.org/fhir/sid/icd-10-cm	Clinical Modification (ICD-10-CM)	CDC
68	Link Type	http://hl7.org/fhir/link-type	ValueSet/link-type	FHIR
69	Location Mode	http://hl7.org/fhir/location-mode	ValueSet/location-mode	FHIR
70	Location Status	http://hl7.org/fhir/location-status	ValueSet/location-status	FHIR
71	Location type	http://terminology.hl7.org/CodeSystem/location-physical-type	ValueSet/location-physical-type	THO
72	Logical Observation Identifiers	http://loinc.org	LOINC provides a set of universal names and ID codes for identifying laboratory and clinical test results.1 2 LOINC facilitates the exchange and pooling of results such as blood hemoglobin serum potassium or vital signs for clinical care outcomes management and research. LOINC's universal identifiers (names and codes) can be used in the context of order and observation exchanges between information systems that use syntax standards such as HL73 CEN TC251 ISO TC215 ASTM4 and DICOM. Specifically the identifier can be used as the coded value for an observation in any other standard that uses the observation/observation value paradigm whether messages documents application programming interface (API) etc. For example LOINC codes are used widely in the OBX segment Observation Identifier field (OBX-3) of an ORU HL7 (HL7 version 2.x or ASTM 1238-9410) message that may be sent between a Clinical Laboratory Information Management Systems (LIMS) and Electronic Health Record Systems (EHR).5 6 In this way LOINC codes provide universal identifiers that allow the exchange of clinical data between heterogeneous computing environments.	LOINC
73	MaritalStatus	http://terminology.hl7.org/CodeSystem/v3-MaritalStatus	ValueSet/marital-status	THO
74	Medication Status Codes	http://hl7.org/fhir/CodeSystem/medication-status	ValueSet/medication-status	FHIR
75	Medication dispense category codes	http://terminology.hl7.org/fhir/CodeSystem/medicationdispense-category	ValueSet/medicationdispense-category	THO
76	Medication dispense status codes	http://terminology.hl7.org/CodeSystem/medicationdispense-status	ValueSet/medicationdispense-status	THO
77	Medication dispense status reason codes	http://terminology.hl7.org/fhir/CodeSystem/medicationdispense-status-reason	ValueSet/medicationdispense-status-reason	THO
78	MedicationDispense Performer Function Codes	http://terminology.hl7.org/CodeSystem/medicationdispense-performer-function	ValueSet/medicationdispense-performer-function	THO
79	MedicationRequest Category Codes	http://terminology.hl7.org/CodeSystem/medicationrequest-category	ValueSet/medicationrequest-category	THO
80	MedicationRequest Course of Therapy Codes	http://terminology.hl7.org/CodeSystem/medicationrequest-course-of-therapy	ValueSet/medicationrequest-course-of-therapy	THO
81	MedicationRequest Intent Codes	http://hl7.org/fhir/CodeSystem/medicationrequest-intent	ValueSet/medicationrequest-intent	FHIR
82	MedicationRequest Status Codes	http://hl7.org/fhir/CodeSystem/medicationrequest-status	ValueSet/medicationrequest-status	FHIR
83	MedicationRequest Status Reason Codes	http://terminology.hl7.org/CodeSystem/medicationrequest-status-reason	ValueSet/medicationrequest-status-reason	THO
84	NameUse	http://hl7.org/fhir/name-use	ValueSet/name-use	FHIR
85	NarrativeStatus	http://hl7.org/fhir/narrative-status	ValueSet/us-core-narrative-status	FHIR
86	NullFlavor	http://terminology.hl7.org/CodeSystem/v3-NullFlavor	ValueSet/us-core-documentreference-type ValueSet/marital-status ValueSet/encounter-special-courtesy	THO
87	Observation Category Codes	http://terminology.hl7.org/CodeSystem/observation-category	ValueSet/us-core-screening-assessment-observation-category ValueSet/us-core-simple-observation-category ValueSet/us-core-clinical-result-observation-category ValueSet/observation-category ValueSet/us-core-screening-assessment-observation-maximum-category	THO
88	Observation Reference Range Meaning Codes	http://terminology.hl7.org/CodeSystem/referencerange-meaning	ValueSet/referencerange-meaning	THO
89	Observation Status	http://hl7.org/fhir/observation-status	ValueSet/us-core-observation-smoking-status-status ValueSet/observation-status	FHIR
90	ObservationInterpretation	http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation	ValueSet/observation-interpretation	THO
91	Occupational Data for Health (ODH)	http://terminology.hl7.org/CodeSystem/PHOccupationalDataForHealthODH	ValueSet/2.16.840.1.114222.4.11.7900 ValueSet/2.16.840.1.114222.4.11.7901	THO
92	Organization type	http://terminology.hl7.org/CodeSystem/organization-type	ValueSet/organization-type	THO
93	Participant type	http://terminology.hl7.org/CodeSystem/participant-type	ValueSet/encounter-participant-type	THO
94	ParticipationFunction	http://terminology.hl7.org/CodeSystem/v3-ParticipationFunction	ValueSet/security-role-type	THO
95	ParticipationType	http://terminology.hl7.org/CodeSystem/v3-ParticipationType	ValueSet/security-role-type ValueSet/encounter-participant-type ValueSet/provenance-activity-type	THO
96	Provenance Entity Role	http://hl7.org/fhir/provenance-entity-role	ValueSet/provenance-entity-role	FHIR
97	Provenance participant type	http://terminology.hl7.org/CodeSystem/provenance-participant-type	ValueSet/provenance-agent-type	THO
98	QuantityComparator	http://hl7.org/fhir/quantity-comparator	ValueSet/quantity-comparator	FHIR
99	Questionnaire Response Status	http://hl7.org/fhir/questionnaire-answers-status	ValueSet/questionnaire-answers-status	FHIR
100	RequestIntent	http://hl7.org/fhir/request-intent	ValueSet/request-intent ValueSet/care-plan-intent	FHIR
101	RequestPriority	http://hl7.org/fhir/request-priority	ValueSet/request-priority	FHIR
102	RequestStatus	http://hl7.org/fhir/request-status	ValueSet/request-status	FHIR
103	ResourceType	http://hl7.org/fhir/resource-types	ValueSet/resource-types ValueSet/care-plan-activity-kind	FHIR
104	RoleClass	http://terminology.hl7.org/CodeSystem/v3-RoleClass	ValueSet/security-role-type	THO
105	RoleCode	http://terminology.hl7.org/CodeSystem/v3-RoleCode	ValueSet/security-role-type ValueSet/2.16.840.1.113883.11.20.12.1-20251204 ValueSet/v3-ServiceDeliveryLocationRoleType ValueSet/2.16.840.1.113883.1.11.19579-20250724	THO
106	RouteOfAdministration	http://terminology.hl7.org/CodeSystem/v3-RouteOfAdministration	ValueSet/immunization-route	THO
107	SNOMED CT (all versions)	http://snomed.info/sct	ValueSet/servicerequest-category ValueSet/specimen-container-type ValueSet/procedure-followup ValueSet/us-core-goal-description ValueSet/specimen-collection-method ValueSet/medication-form-codes ValueSet/body-site ValueSet/manifestation-or-symptom ValueSet/procedure-code ValueSet/goal-start-event ValueSet/medication-as-needed-reason ValueSet/c80-facilitycodes ValueSet/immunization-reason ValueSet/substance-code ValueSet/2.16.840.1.113762.1.4.1099.54-20240606 ValueSet/observation-methods ValueSet/us-core-procedure-code ValueSet/care-plan-category ValueSet/questionnaire-answers ValueSet/servicerequest-orderdetail ValueSet/2.16.840.1.113762.1.4.1166.22-20230802 ValueSet/clinical-findings ValueSet/condition-stage ValueSet/encounter-reason ValueSet/immunization-target-disease ValueSet/participant-role ValueSet/additional-instruction-codes ValueSet/approach-site-codes ValueSet/device-action ValueSet/us-core-condition-code ValueSet/medication-codes ValueSet/device-kind ValueSet/performer-role ValueSet/us-core-servicerequest-category ValueSet/referencerange-appliesto ValueSet/c80-practice-codes ValueSet/2.16.840.1.113762.1.4.1267.3-20240217 ValueSet/route-codes ValueSet/care-plan-activity-outcome ValueSet/2.16.840.1.113762.1.4.1021.121-20250228 ValueSet/procedure-outcome ValueSet/procedure-category ValueSet/condition-code ValueSet/condition-stage-type ValueSet/procedure-not-performed-reason ValueSet/immunization-status-reason ValueSet/condition-outcome ValueSet/administration-method-codes ValueSet/condition-severity	SNOMED
108	Security Role Type	http://terminology.hl7.org/CodeSystem/extra-security-role-type	ValueSet/security-role-type	THO
109	Service type	http://terminology.hl7.org/CodeSystem/service-type	ValueSet/service-type	THO
110	Source of Payment Typology	https://nahdo.org/sopt	ValueSet/2.16.840.1.114222.4.11.3591-20250419	CDC
111	Special arrangements	http://terminology.hl7.org/CodeSystem/encounter-special-arrangements	ValueSet/encounter-special-arrangements	THO
112	Specimen Status	http://hl7.org/fhir/specimen-status	ValueSet/specimen-status	FHIR
113	SubscriberPolicyholder Relationship Codes	http://terminology.hl7.org/CodeSystem/subscriber-relationship	ValueSet/subscriber-relationship	THO
114	Substance Admin Substitution	http://terminology.hl7.org/CodeSystem/v3-substanceAdminSubstitution	ValueSet/v3-ActSubstanceAdminSubstitutionCode	THO
115	Tags for the Identification of Languages	urn:ietf:bcp:47	ValueSet/languages ValueSet/Languages	Other
116	TribalEntityUS	http://terminology.hl7.org/CodeSystem/v3-TribalEntityUS	ValueSet/v3-TribalEntityUS	THO
117	UDI Entry Type	http://hl7.org/fhir/udi-entry-type	ValueSet/udi-entry-type	FHIR
118	US Core Category	http://hl7.org/fhir/us/core/CodeSystem/us-core-category	ValueSet/us-core-screening-assessment-observation-category ValueSet/us-core-simple-observation-category ValueSet/us-core-servicerequest-category ValueSet/us-core-screening-assessment-condition-category ValueSet/us-core-screening-assessment-observation-maximum-category	US CORE
119	US Core Condition Category Extension Codes	http://hl7.org/fhir/us/core/CodeSystem/condition-category	ValueSet/us-core-problem-or-health-concern	US CORE
120	US Core DocumentReferences Category Codes	http://hl7.org/fhir/us/core/CodeSystem/us-core-documentreference-category	ValueSet/us-core-documentreference-category	US CORE
121	USPS State Codes	https://www.usps.com/	ValueSet/USPS-State	Other
122	Unified Code for Units of Measure (UCUM)	http://unitsofmeasure.org	ValueSet/ucum-bodyweight ValueSet/ucum-bodytemp ValueSet/ucum-common ValueSet/ucum-vitals-common ValueSet/ucum-bodylength ValueSet/v3-UnitsOfMeasureCaseSensitive	UCUM
123	Vaccine Administered Code Set (CVX)	http://hl7.org/fhir/sid/cvx	ValueSet/2.16.840.1.113762.1.4.1010.6-20250411	CDC
124	additivePreservative	http://terminology.hl7.org/CodeSystem/v2-0371	ValueSet/v2-0371	THO
125	bedStatus	http://terminology.hl7.org/CodeSystem/v2-0116	ValueSet/v2-0116	THO
126	contactRole2	http://terminology.hl7.org/CodeSystem/v2-0131	ValueSet/patient-contactrelationship	THO
127	diagnosticServiceSectionId	http://terminology.hl7.org/CodeSystem/v2-0074	ValueSet/diagnostic-service-sections	THO
128	identifierType	http://terminology.hl7.org/CodeSystem/v2-0203	ValueSet/identifier-type	THO
129	providerRole	http://terminology.hl7.org/CodeSystem/v2-0443	ValueSet/immunization-function	THO
130	re-admissionIndicator	http://terminology.hl7.org/CodeSystem/v2-0092	ValueSet/v2-0092	THO
131	relevantClincialInformation	http://terminology.hl7.org/CodeSystem/v2-0916	ValueSet/v2-0916	THO
132	treatment	http://terminology.hl7.org/CodeSystem/v2-0373	ValueSet/specimen-processing-procedure	THO

The Value Set Authority Center (VSAC)

This guide links terminology directly to the FHIR® Terminology Service for VSAC Resources (Value Set Authority Center (VSAC)), where applicable, using a RESTful API service to access the VSAC value sets and supported code systems. See the table above for a list of value sets used in US Core that VSAC defines.

How to Acess Value Sets in VSAC

• VSAC requires login using your own UMLS API Key to view the value sets. VSAC UMLS Licensing information. (See the screenshots below)
• The value sets in VSAC are specified using a VSAC value set OID.

• To view the value set expansion in the VSAC user interface, use:

  GET https://vsac.nlm.nih.gov/ValueSet/[VSAC OID]/expansion

  An example of this is shown in the screenshots below.

  When viewing a ValueSet in the VSAC UI, the Code System OIDs and VSAC Code System names are displayed for each code. However, these code system identifiers SHOULD NOT be used. The FHIR URIs code systems are defined as part of FHIR and SHOULD be used instead. Unfortunately, the FHIR URI for the code system is not shown. As a convenience for the reader, a VSAC to FHIR Code System Mapping Table is provided, which maps the VSAC Code System names to the corresponding FHIR URI. For more information, see this documentation describing the relationships between the VSAC value set name, FHIR value set name, and FHIR value set title and how to access VSAC's FHIR API.

• To fetch the FHIR ValueSet resource (in other words, the value set definition), use:

  GET https://cts.nlm.nih.gov/fhir/ValueSet/[VSAC OID]

• To fetch the FHIR ValueSet resource expansion, use the FHIR $expand operation:

  GET https://cts.nlm.nih.gov/fhir/ValueSet/[VSAC OID]/$expand

For more information, refer to the FHIR Terminology Service for VSAC Resources

Example

For example, the US Core Smoking Status Observation Profile valueCodeableConcept element has a preferred binding to the Smoking Status value set. To access it in VSAC, click on the link to https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.11.20.9.38/expansion:

The reader is redirected to the VSAC login page to enter an API Key (only one login is required per session):

After successfully entering the API Key, the value set can be inspected, downloaded, etc., using the VSAC User interface, as shown in the figure below. This FHIR ValueSet resource can also be fetched using the URL https://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.11.20.9.38, and the FHIR ValueSet expansion using the URL https://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.11.20.9.38/$expand.