HL7 v2.9.1 Vocabulary
0.2.0 - ci-build

HL7 v2.9.1 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.v291/ and changes regularly. See the Directory of published versions

## CodeSystem: Reason for Study (2.9.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/reasonForStudy | Version: 1.0.0
Active as of 2026-03-13 | Computable Name: ReasonForStudy
Other Identifiers: OID:2.16.840.1.113883.18.451, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0951
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts that provide additional information to the universal service identifier on why a test, study or review was ordered. Initial values are to support the IHE LCC LAB-7 transaction.

This Code system is referenced in the content logical definition of the following value sets:

- Hl7VSReasonForStudy

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description
version introduced | versionIntroduced | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced | string | version when was this code introduced
version deprecated | versionDeprecated | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated | string | version when was this code deprecated
status | status | http://hl7.org/fhir/concept-properties#status | code | A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired
comment, to suppress IG-publisher warning, to be replaced with standard later | comment | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment | string | A string that provides additional detail pertinent to the use or understanding of the concept
usage | usage | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage | string | usage notes for this code
modified | modified | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified | dateTime | date of last modification

Concepts

This case-sensitive code system `http://terminology.hl7.org/v2plusvocab/CodeSystem/reasonForStudy` defines the following codes:

Code | Display | Definition | version introduced | status | comment, to suppress IG-publisher warning, to be replaced with standard later | usage | modified
BS | Bank residual specimen | Requests that the specimen should be stored long term | 2.9 |  |  |  | 2022-08-25
CR | Confirm results value | Requests verification of previously reported results | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
FP | Store residual specimen pending follow up | Requests that the specimen should be saved for a short duration until follow up is completed | 2.9 |  | Provides instructions for Specimen storage |  | 2022-08-25
IN | Interpret results | Requests interpretation of previously reported results | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
IR | Review clinically inconsistent results | Requests comparison of previously reported results amongst themselves | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
IT | Incorrect test performed | For process improvement work this code can be used to identify when an incorrect test was performed for the target order | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
OP | Test ordering problem | For process improvement work this code can be used to identify orders and the respective results, where problems occurred during ordering | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
PI | Patient identification problem | For process improvement work this code can be used to identify when a patient identification issue has occurred on the target order | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
SI | Suspected interference | Requests verification of previously reported results due to suspected interference | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
SP | Sampling problem | For process improvement work this code can be used to identify orders, where problems occurred during sample collection | 2.9 | retired |  | Used to indicate why review is requested |
TP | Specimen transport problem | For process improvement work this code can be used to identify orders, where problems occurred during sample transport | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
TT | Turnaround time problem | For process improvement work this code can be used to identify results with excessive reporting delay | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25
XR | Incorrect results | For process improvement work this code can be used to identify when incorrect result were reported for the target order | 2.9 |  |  | Used to indicate why review is requested | 2022-08-25