US Quality Core Implementation Guide
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US Quality Core Implementation Guide, published by ASTP. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/us-quality-core/ and changes regularly. See the Directory of published versions

Extension: US Quality Core Diagnosis Present on Admission

Official URL: http://fhir.org/guides/astp/us-quality-core/StructureDefinition/us-quality-core-encounter-diagnosisPresentOnAdmission Version: 0.1.0
Draft as of 2026-03-31 Computable Name: USQualityCoreDiagnosisPresentOnAdmission

Indicator of whether the Encounter diagnosis was present at the time of admission.

Context of Use

Usage

See the patterns page for implementation and usage patterns. 

define "Encounter With Diabetes Diagnosis Present on Admission":
  "Non-Elective Inpatient Encounter Less Than 120 Days" IPEncounter
    where exists (IPEncounter.diagnosis D
      where D.condition.getCondition().code in "Diabetes"
        and D.diagnosisPresentOnAdmission in "Present on Admission or Clinically Undetermined"
    )

Examples

Inpatient Admission for Appendicitis

Usage info

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 1..1 Extension onAdmission
... url 1..1 uri "http://fhir.org/guides/astp/us-quality-core/StructureDefinition/us-quality-core-encounter-diagnosisPresentOnAdmission"
... value[x] 0..1 CodeableConcept Value of extension
Binding: USQualityCore Present On Admission Codes (required): Indicator of whether the Encounter diagnosis was present at the time of admission

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 1..1 Extension onAdmission
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... url 1..1 uri "http://fhir.org/guides/astp/us-quality-core/StructureDefinition/us-quality-core-encounter-diagnosisPresentOnAdmission"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type CodeableConcept: Indicator of whether the Encounter diagnosis was present at the time of admission.

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 1..1 Extension onAdmission
... url 1..1 uri "http://fhir.org/guides/astp/us-quality-core/StructureDefinition/us-quality-core-encounter-diagnosisPresentOnAdmission"
... value[x] 0..1 CodeableConcept Value of extension
Binding: USQualityCore Present On Admission Codes (required): Indicator of whether the Encounter diagnosis was present at the time of admission

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 1..1 Extension onAdmission
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... url 1..1 uri "http://fhir.org/guides/astp/us-quality-core/StructureDefinition/us-quality-core-encounter-diagnosisPresentOnAdmission"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type CodeableConcept: Indicator of whether the Encounter diagnosis was present at the time of admission.

 

Other representations of profile: CSV, Excel, Schematron

Terminology Bindings

Path Status Usage ValueSet Version Source
Extension.value[x] Base required USQualityCore Present On Admission Codes 📦0.1.0 This IG

Constraints

Id Grade Path(s) Description Expression
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()