HL7 v2.9 Vocabulary
0.2.0 - ci-build

HL7 v2.9 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v29/ and changes regularly. See the Directory of published versions

## ValueSet: Nature of Service/Test/Observation (2.9 - 1.1.1) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/ValueSet/hl7VSnatureOfServiceTestObservation | Version: 1.1.1
Active as of 2026-03-13 | Computable Name: Hl7VSnatureOfServiceTestObservation
Other Identifiers: OID:2.16.840.1.113883.21.102, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/ValueSet/v2-0174
Copyright/Legal: HL7 Inc., 2026

Concepts specifying an identification of a test battery, an entire functional procedure or study, a single test value (observation), multiple test batteries or functional procedures as an orderable unit (profile), or a single test value (observation) calculated from other independent observations, typically used as an indicator for Master Files.

References

This value set is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

### Logical Definition (CLD)

- Include all codes defined in `http://terminology.hl7.org/v2plusvocab/CodeSystem/natureOfServiceTestObservation` version 📍1.1.1

### Expansion

Expansion performed internally based on codesystem Nature of Service/Test/Observation (2.9 - 1.1.1) v1.1.1 (CodeSystem)

This value set contains 5 concepts

System | Code | Display (en) | Definition | JSON | XML
`http://terminology.hl7.org/v2plusvocab/CodeSystem/natureOfServiceTestObservation` | A | Atomic service/test/observation | Atomic service/test/observation (test code or treatment code) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/natureOfServiceTestObservation` | C | Single observation, calculated | Single observation calculated via a rule or formula from other independent observations (e.g., Alveolar-arterial ratio, cardiac output) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/natureOfServiceTestObservation` | F | Functional procedure | Functional procedure that may consist of one or more interrelated measures (e.g., glucose tolerance test, creatinine clearance), usually done at different times and/or on different specimens |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/natureOfServiceTestObservation` | P | Profile or battery | Profile or battery consisting of many independent atomic observations (e.g., SMA12, electrolytes), usually done at one instrument on one specimen |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/natureOfServiceTestObservation` | S | Superset-a set of batteries or procedures | Superset-a set of batteries or procedures ordered under a single code unit but processed as separate batteries (e.g., routines = CBC, UA, electrolytes) This set indicates that the code being described is used to order multiple service/test/observation batteries. For example, a client who routinely orders a CBC, a differential, and a thyroxine as an outpatient profile might use a single, special code to order all three test batteries, instead of having to submit three separate order codes. |  |

Explanation of the columns that may appear on this page:

Level | A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System | The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code | The code (used as the code in the resource instance)
Display | The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition | An explanation of the meaning of the concept
Comments | Additional notes about how to use the code