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4.3.1.386 4.4.1.479 Value Set http://hl7.org/fhir/ValueSet/observation-interpretation

Orders and Observations Work Group   Maturity Level : 5 N Informative Normative (from v4.1.0) Use Context : Not Intended for Production use Any

This is a value set defined by the FHIR project.

Summary

Defining URL: http://hl7.org/fhir/ValueSet/observation-interpretation
Version: 4.1.0
Name: ObservationInterpretationCodes
Title: Observation Interpretation Codes
Definition: This

A categorical assessment, providing a rough qualitative interpretation of the observation value, such as “normal”/ “abnormal”,”low” / “high”, “better” / “worse”, “susceptible” / “resistant”, “expected”/ “not expected”. The value set defines is intended to be for ANY use where coded representation of an interpretation is needed.

Notes:

This is being communicated in v2.x in OBX-8 (Observation Interpretation), in v3 in ObservationInterpretation (CWE) in R1 (Representative Realm) and in FHIR in Observation.interpretation. Historically these values come from the laboratory domain, and these codes are extensively used. The value set of binding is extensible, so codes outside the value set that are needed for interpretation concepts (i.e. particular meanings) that are not included in the value set can be used used, and these new codes may also be added to indicate the meaning/use of value set and published in a reference range. future version.

Committee: Orders and Observations Work Group
OID: 2.16.840.1.113883.4.642.3.386 2.16.840.1.113883.4.642.3.399 (for OID based terminology systems)
Source Resource XML / JSON

This value set is used in the following places:


This value set includes codes from the following code systems:

 

This expansion generated 19 Apr 2017 08 Jun 2019


This value set contains 39 concepts

Expansion based on http://hl7.org/fhir/v2/0078 http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation version 2.8.2 2018-08-12

All codes from system http://hl7.org/fhir/v2/0078 http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation
Lvl Code Display Definition
< 0 Off scale low _GeneticObservationInterpretation > Off scale high GeneticObservationInterpretation Codes that specify interpretation of genetic analysis, such as "positive", "negative", "carrier", "responsive", etc.
A 1    CAR Abnormal Carrier The patient is considered as carrier based on the testing results. A carrier is an individual who carries an altered form of a gene which can lead to having a child or offspring in future generations with a genetic disorder.
AA 0 Critically abnormal _ObservationInterpretationChange AC Anti-complementary substances present ObservationInterpretationChange Interpretations of change of quantity and/or severity. At most one of B or W and one of U or D allowed.
1    B Better The current result or observation value has improved compared to the previous result or observation value (the change is significant as defined in the respective test procedure). [Note: This can be applied to quantitative or qualitative observations.]
1    D Significant change down The current result has decreased from the previous result for a quantitative observation (the change is significant as defined in the respective test procedure).
DET 1    U Detected Significant change up The current result has increased from the previous result for a quantitative observation (the change is significant as defined in the respective test procedure).
H 1    W High Worse The current result or observation value has degraded compared to the previous result or observation value (the change is significant as defined in the respective test procedure). [Note: This can be applied to quantitative or qualitative observations.]
HH 0 Critically high _ObservationInterpretationExceptions HM Hold for Medical Review ObservationInterpretationExceptions Technical exceptions resulting in the inability to provide an interpretation. At most one allowed. Does not imply normality or severity.
HU 1    < Very high Off scale low The result is below the minimum detection limit (the test procedure or equipment is the limiting factor). Synonyms: Below analytical limit, low off scale.
I 1    > Intermediate Off scale high The result is above the maximum quantifiable limit (the test procedure or equipment is the limiting factor). Synonyms: Above analytical limit, high off scale.
1    IE Insufficient evidence There is insufficient evidence that the species in question is a good target for therapy with the drug. A categorical interpretation is not possible. [Note: A MIC with "IE" and/or a comment may be reported (without an accompanying S, I or R-categorization).]
0 _ObservationInterpretationNormality IND Indeterminate ObservationInterpretationNormality Interpretation of normality or degree of abnormality (including critical or "alert" level). Concepts in this category are mutually exclusive, i.e., at most one is allowed.
L 1    A Low Abnormal The result or observation value is outside the reference range or expected norm (as defined for the respective test procedure). [Note: Typically applies to non-numeric results.]
LL 2      AA Critically low Critical abnormal The result or observation value is outside a reference range or expected norm at a level at which immediate action should be considered for patient safety (as defined for the respective test procedure). [Note: Typically applies to non-numeric results. Analogous to critical/panic limits for numeric results.]
LU 3        HH Very low Critical high The result for a quantitative observation is above a reference level at which immediate action should be considered for patient safety (as defined for the respective test procedure). Synonym: Above upper panic limits.
MS 3        LL Moderately susceptible. Indicates for microbiology susceptibilities only. Critical low The result for a quantitative observation is below a reference level at which immediate action should be considered for patient safety (as defined for the respective test procedure). Synonym: Below lower panic limits.
N 2      H Normal High The result for a quantitative observation is above the upper limit of the reference range (as defined for the respective test procedure). Synonym: Above high normal
ND 3        HU Not Detected Significantly high A test result that is significantly higher than the reference (normal) or therapeutic interval, but has not reached the critically high value and might need special attention, as defined by the laboratory or the clinician.
NEG 2      L Negative Low The result for a quantitative observation is below the lower limit of the reference range (as defined for the respective test procedure). Synonym: Below low normal
NR 3        LU Non-reactive Significantly low A test result that is significantly lower than the reference (normal) or therapeutic interval, but has not reached the critically low value and might need special attention, as defined by the laboratory or the clinician.
NS 1    N Non-susceptible Normal The result or observation value is within the reference range or expected norm (as defined for the respective test procedure). [Note: Applies to numeric or non-numeric results.]
0 _ObservationInterpretationSusceptibility null No range defined, or normal ranges don't apply ObservationInterpretationSusceptibility Interpretations of anti-microbial susceptibility testing results (microbiology). At most one allowed.
OBX 1    I Interpretation qualifiers in separate OBX segments Intermediate Bacterial strain inhibited in vitro by a concentration of an antimicrobial agent that is associated with uncertain therapeutic effect. Reference: CLSI (http://www.clsi.org/Content/NavigationMenu/Resources/HarmonizedTerminologyDatabase/Harmonized_Terminolo.htm) Projects: ISO 20776-1, ISO 20776-2 [Note 1: Bacterial strains are categorized as intermediate by applying the appropriate breakpoints in a defined phenotypic test system.] [Note 2: This class of susceptibility implies that an infection due to the isolate can be appropriately treated in body sites where the drugs are physiologically concentrated or when a high dosage of drug can be used.] [Note 3: This class also indicates a "buffer zone," to prevent small, uncontrolled, technical factors from causing major discrepancies in interpretations.] [Note 4: These breakpoints can be altered due to changes in circumstances (e.g., changes in commonly used drug dosages, emergence of new resistance mechanisms).]
POS 1    NCL Positive No CLSI defined breakpoint Use when not enough clinical trial data published by the Clinical and Laboratory Standards Institutes (CLSI) is available to establish the breakpoints for susceptible / intermediate and resistant.
QCF 1    NS Quality Control Failure Non-susceptible A category used for isolates for which only a susceptible interpretive criterion has been designated because of the absence or rare occurrence of resistant strains. Isolates that have MICs above or zone diameters below the value indicated for the susceptible breakpoint should be reported as non-susceptible. NOTE 1: An isolate that is interpreted as non-susceptible does not necessarily mean that the isolate has a resistance mechanism. It is possible that isolates with MICs above the susceptible breakpoint that lack resistance mechanisms may be encountered within the wild-type distribution subsequent to the time the susceptible-only breakpoint is set. NOTE 2: For strains yielding results in the "nonsusceptible" category, organism identification and antimicrobial susceptibility test results should be confirmed. Synonym: decreased susceptibility.
1    R Resistant Bacterial strain inhibited in vitro by a concentration of an antimicrobial agent that is associated with a high likelihood of therapeutic failure. Reference: CLSI (http://www.clsi.org/Content/NavigationMenu/Resources/HarmonizedTerminologyDatabase/Harmonized_Terminolo.htm) Projects: ISO 20776-1, ISO 20776-2 [Note 1: Bacterial strains are categorized as resistant by applying the appropriate breakpoints in a defined phenotypic test system.] [Note 2: This breakpoint can be altered due to changes in circumstances (e.g., changes in commonly used drug dosages, emergence of new resistance mechanisms).]
RR 2      SYN-R Reactive Synergy - resistant A category for isolates where the bacteria (e.g. enterococci) are not susceptible in vitro to a combination therapy (e.g., high-level aminoglycoside and cell wall active agent). This is predictive that this combination therapy will not be effective. Usage Note: Since the use of penicillin or ampicillin alone often results in treatment failure of serious enterococcal or other bacterial infections, combination therapy is usually indicated to enhance bactericidal activity. The synergy between a cell wall active agent (such as penicillin, ampicillin, or vancomycin) and an aminoglycoside (such as gentamicin, kanamycin or streptomycin) is best predicted by screening for high-level bacterial resistance to the aminoglycoside. Open Issue: The print name of the code is very general and the description is very specific to a pair of classes of agents, which may lead to confusion of these concepts in the future should other synergies be found.
1    S Susceptible Bacterial strain inhibited by in vitro concentration of an antimicrobial agent that is associated with a high likelihood of therapeutic success. Reference: CLSI (http://www.clsi.org/Content/NavigationMenu/Resources/HarmonizedTerminologyDatabase/Harmonized_Terminolo.htm) Synonym (earlier term): Sensitive Projects: ISO 20776-1, ISO 20776-2 [Note 1: Bacterial strains are categorized as susceptible by applying the appropriate breakpoints in a defined phenotypic system.] [Note 2: This breakpoint can be altered due to changes in circumstances (e.g., changes in commonly used drug dosages, emergence of new resistance mechanisms).]
2      SDD Susceptible-dose dependent A category that includes isolates with antimicrobial agent minimum inhibitory concentrations (MICs) that approach usually attainable blood and tissue levels and for which response rates may be lower than for susceptible isolates. Reference: CLSI document M44-A2 2009 "Method for antifungal disk diffusion susceptibility testing of yeasts; approved guideline - second edition" - page 2.
SYN-R 2      SYN-S Synergy - resistant susceptible A category for isolates where the bacteria (e.g. enterococci) are susceptible in vitro to a combination therapy (e.g., high-level aminoglycoside and cell wall active agent). This is predictive that this combination therapy will be effective. Usage Note: Since the use of penicillin or ampicillin alone often results in treatment failure of serious enterococcal or other bacterial infections, combination therapy is usually indicated to enhance bactericidal activity. The synergy between a cell wall active agent (such as penicillin, ampicillin, or vancomycin) and an aminoglycoside (such as gentamicin, kanamycin or streptomycin) is best predicted by screening for high-level bacterial resistance to the aminoglycoside. Open Issue: The print name of the code is very general and the description is very specific to a pair of classes of agents, which may lead to confusion of these concepts in the future should other synergies be found.
0 SYN-S EX Synergy - susceptible outside threshold The observation/test result is interpreted as being outside the inclusion range for a particular protocol within which the result is being reported. Example: A positive result on a Hepatitis screening test. Open Issue: EX, HX, LX: These three concepts do not seem to meet a clear need in the vocabulary, and their use in observation interpretation appears likely to be covered by other existing concepts (e.g., A, H, L). The only apparent significant difference is their reference to use in protocols for exclusion of study subjects. These concepts/codes were proposed by RCRIM for use in the CTLaboratory message. They were submitted and approved in the November 2005 Harmonization cycle in proposal "030103C_VOCAB_RCRIM_l_quade_RCRIM Obs Interp_20051028154455". However, this proposal was not fully implemented in the vocabulary. The proposal recommended creation of the x_ClinicalResearchExclusion domain in ObservationInterpretation with a value set including those three concepts/codes, but there is no subdomain of that name or equivalent with a binding to either of the value sets that contain these concepts/codes. Members of the OO WG have recently attempted to contact members of RCRIM regarding these concepts, both by email and at the recent WGM in Atlanta, without response. It is felt by OO that the best course of action to take at this time is to add this comprehensive Open Issue rather than deprecate these three concepts at this time, until further discussion is held.
TOX 1    HX Cytotoxic substance present above high threshold The observation/test result is interpreted as being outside the inclusion range for a particular protocol within which the result is being reported. Example: A positive result on a Hepatitis screening test. Open Issue: EX, HX, LX: These three concepts do not seem to meet a clear need in the vocabulary, and their use in observation interpretation appears likely to be covered by other existing concepts (e.g., A, H, L). The only apparent significant difference is their reference to use in protocols for exclusion of study subjects. These concepts/codes were proposed by RCRIM for use in the CTLaboratory message. They were submitted and approved in the November 2005 Harmonization cycle in proposal "030103C_VOCAB_RCRIM_l_quade_RCRIM Obs Interp_20051028154455". However, this proposal was not fully implemented in the vocabulary. The proposal recommended creation of the x_ClinicalResearchExclusion domain in ObservationInterpretation with a value set including those three concepts/codes, but there is no subdomain of that name or equivalent with a binding to either of the value sets that contain these concepts/codes. Members of the OO WG have recently attempted to contact members of RCRIM regarding these concepts, both by email and at the recent WGM in Atlanta, without response. It is felt by OO that the best course of action to take at this time is to add this comprehensive Open Issue rather than deprecate these three concepts at this time, until further discussion is held.
U 1    LX Significant change up below low threshold The numeric observation/test result is interpreted as being below the low threshold value for a particular protocol within which the result is being reported. Example: A Total White Blood Cell Count falling below a protocol-defined threshold value of 3000/mm^3 Open Issue: EX, HX, LX: These three concepts do not seem to meet a clear need in the vocabulary, and their use in observation interpretation appears likely to be covered by other existing concepts (e.g., A, H, L). The only apparent significant difference is their reference to use in protocols for exclusion of study subjects. These concepts/codes were proposed by RCRIM for use in the CTLaboratory message. They were submitted and approved in the November 2005 Harmonization cycle in proposal "030103C_VOCAB_RCRIM_l_quade_RCRIM Obs Interp_20051028154455". However, this proposal was not fully implemented in the vocabulary. The proposal recommended creation of the x_ClinicalResearchExclusion domain in ObservationInterpretation with a value set including those three concepts/codes, but there is no subdomain of that name or equivalent with a binding to either of the value sets that contain these concepts/codes. Members of the OO WG have recently attempted to contact members of RCRIM regarding these concepts, both by email and at the recent WGM in Atlanta, without response. It is felt by OO that the best course of action to take at this time is to add this comprehensive Open Issue rather than deprecate these three concepts at this time, until further discussion is held.
0 ObservationInterpretationDetection VS Very susceptible. Indicates for microbiology susceptibilities only. ObservationInterpretationDetection Interpretations of the presence or absence of a component / analyte or organism in a test or of a sign in a clinical observation. In keeping with laboratory data processing practice, these concepts provide a categorical interpretation of the "meaning" of the quantitative value for the same observation.
W 1    IND Worse Indeterminate The specified component / analyte, organism or clinical sign could neither be declared positive / negative nor detected / not detected by the performed test or procedure. Usage Note: For example, if the specimen was degraded, poorly processed, or was missing the required anatomic structures, then "indeterminate" (i.e. "cannot be determined") is the appropriate response, not "equivocal".
WR 2      E Weakly reactive Equivocal Additional Language Displays The test or procedure was successfully performed, but the results are borderline and can neither be declared positive / negative nor detected / not detected according to the current established criteria.
Code Deutsch (German, de) Nederlands (Dutch, nl) 1    NEG < Unter Meßbereich (Extremwertverletzung) Negative Onder absolute ondergrens instrumentschaal An absence finding of the specified component / analyte, organism or clinical sign based on the established threshold of the performed test or procedure. [Note: Negative does not necessarily imply the complete absence of the specified item.]
> Über Meßbereich (Extremwertverletzung) Boven absolute bovengrens instrumentschaal A anormal (nicht numerisch) Abnormaal 2      ND AA Pathologisch (nicht numerisch) Not detected Kritiek abnormaal The presence of the specified component / analyte, organism or clinical sign could not be determined within the limit of detection of the performed test or procedure.
AC Anti-complementaire stoffen aanwezig 1    POS B Verbesserung Positive Beter A presence finding of the specified component / analyte, organism or clinical sign based on the established threshold of the performed test or procedure.
D Deutlicher Trend nach unten Significante wijzging omlaag 2      DET Gedetecteerd H Oberhalb oberer Grenze Referenzbereich Hoog HH Oberhalb oberer pathologischer Grenze Kritiek hoog HM Detected Vastgehouden voor medische review The measurement of the specified component / analyte, organism or clinical sign above the limit of detection of the performed test or procedure.
HU Zeer hoog 0 I Intermediär Gemiddeld IE ObservationInterpretationExpectation Onvoldoende bewijs IND ObservationInterpretationExpectation Onbepaald Interpretation of the observed result taking into account additional information (contraindicators) about the patient's situation. Concepts in this category are mutually exclusive, i.e., at most one is allowed.
L Unterhalb unterer Grenze Referenzbereich Laag LL Unterhalb unterer pathologischer Grenze Kritiek laag 1    EXP LU Expected Zeer laag This result has been evaluated in light of known contraindicators. Once those contraindicators have been taken into account the result is determined to be "Expected" (e.g., presence of drugs in a patient that is taking prescription medication for pain management).
MS mäßig empfindlich Gemiddeld gevoelig. Alleen voor microbiologische gevoeligheid. N Normal (nicht numerisch) Normaal 1    UNE ND Unexpected Niet-gedetecteerd This result has been evaluated in light of known contraindicators. Once those contraindicators have been taken into account the result is determined to be "Unexpected" (e.g., presence of non-prescribed drugs in a patient that is taking prescription medication for pain management).
NEG Negatief NR 0 Niet-reactief NS ReactivityObservationInterpretation Niet-gevoelig null Kein Referenzbereich / Referenzbereich nicht anwendbar ReactivityObservationInterpretation Geen referentiewaarden gedefinieerd Interpretations of normale waarden niet van toepassing OBX Interpretatie qualifiers the presence and level of reactivity of the specified component / analyte with the reagent in afzonderlijke OBX-segmenten the performed laboratory test.
POS Positief 1    NR QCF Non-reactive Kwaliteitscontrole fout An absence finding used to indicate that the specified component / analyte did not react measurably with the reagent.
R Resistent Resistent 1    RR Reactief S Empfindlich Gevoelig SDD Gevoelig dosis-afhankelijk SYN-R Synergie - resistent SYN-S Synergie - gevoelig TOX Cytotoxische stoffen aanwezig U Deutlicher Trend nach oben Significante wijzging omhoog VS Sehr empfindlich Reactive Zeer gevoelig. Alleen voor microbiologische gevoeligheid. A presence finding used to indicate that the specified component / analyte reacted with the reagent above the reliably measurable limit of the performed test.
W Verschlechterung Slechter 2      WR Zwak reactief Weakly reactive A weighted presence finding used to indicate that the specified component / analyte reacted with the reagent, but below the reliably measurable limit of the performed test.

 

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