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Resource element (CodeableConcept)FHIR ValueSetSNOMED CT attributeSNOMED CT rangeComments

Observation.category

https://www.hl7.org/fhir/valueset-observation-category.html#expansion

Use case for providing SNOMED mappings?
Observation.codehttps://www.hl7.org/fhir/valueset-observation-codes.html#expansion
<<363787002|Observable entity|


Observation.Value.valueCodeableConcept

<<362981000|Qualifier value|

MINUS <valueset for Observation.Interpretation> ?


LB: why not also members from <<441742003 Evaluation finding

JC: Because they decompose (in theory) into an Observable+Qualifier pair

Observation.Interpretation


29679002|Carrier of disorder|

385425000|Improved|

442474009|Decreased relative to previous|

442387004|Increased relative to previous|

231877006|Worse|

263654008|Abnormal|

17621005|Normal|

264841006|Intermediately susceptible|

30714006|Resistant|

131196009|Susceptible|
HL7 Code
HL7 Code Display
SNOMED CT

_GeneticObservationInterpretation

  CAR



CARCarrier29679002|Carrier of disorder|

_ObservationInterpretationChange



  B

  D

  U

  W

_ObservationInterpretationExceptions

  <

  >

  IE

_ObservationInterpretationNormality

  A

    AA

      HH

      LL

    H

      HU

    L

      LU

  N

_ObservationInterpretationSusceptibility

  I

  NCL

  NS

  R

    SYN-R

  S

    SDD

    SYN-S

EX

  HX

  LX

ObservationInterpretationDetection

  IND

    E

  NEG

    ND

  POS

    DET

ObservationInterpretationExpectation

  EXP

  UNE

ReactivityObservationInterpretation

  NR

  RR

    WR

GeneticObservationInterpretation

Carrier

ObservationInterpretationChange

Better

Significant change down

Significant change up

Worse

ObservationInterpretationExceptions

Off scale low

Off scale high

Insufficient evidence

ObservationInterpretationNormality

Abnormal

Critical abnormal

Critical high

Critical low

High

Significantly high

Low

Significantly low

Normal

ObservationInterpretationSusceptibility

Intermediate

No CLSI defined breakpoint

Non-susceptible

Resistant

Synergy - resistant

Susceptible

Susceptible-dose dependent

Synergy - susceptible

outside threshold

above high threshold

below low threshold

ObservationInterpretationDetection

Indeterminate

Equivocal

Negative

Not detected

Positive

Detected

ObservationInterpretationExpectation

Expected

Unexpected

ReactivityObservationInterpretation

Non-reactive

Reactive

Weakly reactive

Better385425000|Improved|
  DSignificant change down442474009|Decreased relative to previous|
  USignificant change up442387004|Increased relative to previous|
  WWorse231877006|Worse|

_ObservationInterpretationExceptions



  <

Off scale low


  >Off scale high
  IEInsufficient evidence

_ObservationInterpretationNormality



  A

Abnormal

263654008|Abnormal|

    AACritical abnormal
      HHCritical high
      LLCritical low
    HHigh
      HUSignificantly high
    LLow

      LU

Significantly low
  NNormal

17621005|Normal|

_ObservationInterpretationSusceptibility



  I

Intermediate

264841006|Intermediately susceptible|

  NCL

No CLSI defined breakpoint
  NSNon-susceptible
  RResistant30714006|Resistant|
    SYN-RSynergy - resistant
  SSusceptible131196009|Susceptible|
    SDDSusceptible-dose dependent

    SYN-S

Synergy - susceptible
EXoutside threshold394844007|Outside reference range|
  HXabove high threshold281302008|Above reference range|
  LXbelow low threshold281300000|Below reference range|
ObservationInterpretationDetection

 IND

Indeterminate82334004|Indeterminate|
    EEquivocal42425007|Equivocal|
  NEGNegative260385009|Negative|

    ND

Not detected260415000|Not detected|
  POSPositive10828004|Positive|
    DETDetected260373001|Detected|
ObservationInterpretationExpectation

  EXPExpected
  UNEUnexpected
ReactivityObservationInterpretation

  NRNon-reactive131194007|Non-Reactive|
  RRReactive11214006|Reactive|
    WRWeakly reactive117006002|Weakly-reactive|


HL7 valueset (n=48) is extensible, so could add new expressivity as SNOMED codes if there were any gaps in existing list ... but that existing list is already relatively matured and 'metalled' by use, so that seem an unlikely requirement. Many of the existing members of the HL7 valuelist have obvious SNOMED equivalents, so there is scope for a mapping rather than a completely separate SNOMED-only valuelist. Mapping exercise may also reveal some holes in existing SNOMED expressivity.

...