v2+ Vocabulary
0.3.0 - Working Draft to present the concept ideas (FO)

v2+ Vocabulary - Local Development build (v0.3.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

CodeSystem: Interpretation Codes (2.7 - 2.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/observationInterpretationV200 Version: 2.0.0
Active as of 2025-08-05 Computable Name: ObservationInterpretationV200
Other Identifiers: OID:2.16.840.1.113883.5.83

Copyright/Legal: HL7 Inc., 2024

HL7-defined code system of concepts which specify a categorical assessment of an observation value. Used in HL7 Version 2.x messaging in the OBX segment. Notes: This is being communicated in v2.x in OBX-8, in v3 in ObservationInterpretation (CWE) in R1 (Representative Realm) and in FHIR Observation.interpretation.

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

Properties

This code system defines the following properties for its concepts

NameCodeURITypeDescription
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/observationInterpretationV200 defines the following codes:

CodeDisplayDefinitionversion introducedcomment, to suppress IG-publisher warning, to be replaced with standard latermodifiedDeutsch (German, de)
< Below absolute low-off instrument scale Below absolute low-off instrument scale 2.1 Unter Meßbereich (Extremwertverletzung)
> Above absolute high-off instrument scale Above absolute high-off instrument scale 2.2 Über Meßbereich (Extremwertverletzung)
A Abnormal (applies to non-numeric results) Abnormal (applies to non-numeric results) 2.1 anormal (nicht numerisch)
AA Very abnormal Very abnormal (applies to non-numeric units, analogous to panic limits for numeric units) 2.1 Pathologisch (nicht numerisch)
AC Anti-complementary substances present Anti-complementary substances present 2.7
B Better Better (use when direction not relevant) 2.2 2025-08-02 Verbesserung
D Significant change down Significant change down 2.1 Deutlicher Trend nach unten
DET Detected Detected 2.7
H Above high normal Above high normal 2.1 Oberhalb oberer Grenze Referenzbereich
HH Above upper panic limits Above upper panic limits 2.1 Oberhalb oberer pathologischer Grenze
I Intermediate Intermediate. Indicates for microbiology susceptibilities only. 2.1 2025-08-02 Intermediär
IND Indeterminate Indeterminate 2.7
L Below low normal Below low normal 2.2 Unterhalb unterer Grenze Referenzbereich
LL Below lower panic limits Below lower panic limits 2.1 Unterhalb unterer pathologischer Grenze
MS Moderately susceptible Moderately susceptible. Indicates for microbiology susceptibilities only. 2.1 mäßig empfindlich
N Normal Normal (applies to non-numeric results) 2.2 applies to non-numeric results 2025-08-02 Normal (nicht numerisch)
ND Not Detected Not Detected 2.7
NEG Negative Negative 2.7
NR Non-reactive Non-reactive 2.7
POS Positive Positive 2.7
QCF Quality Control Failure Quality Control Failure 2.7
R Resistant Resistant. Indicates for microbiology susceptibilities only. 2.1 2025-08-02 Resistent
RR Reactive Reactive 2.7
S Susceptible Susceptible. Indicates for microbiology susceptibilities only. 2.1 2025-08-02 Empfindlich
TOX Cytotoxic substance present Cytotoxic substance present 2.7
U Significant change up Significant change up 2.1 Deutlicher Trend nach oben
VS Very susceptible Very susceptible. Indicates for microbiology susceptibilities only. 2.1 2025-08-02 Sehr empfindlich
W Worse Worse-use when direction not relevant 2.2 2025-08-02 Verschlechterung
WR Weakly reactive Weakly reactive 2.7
null No range defined, or normal ranges don't apply No range defined, or normal ranges don't apply 2.1 Kein Referenzbereich / Referenzbereich nicht anwendbar