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Term Description

The Clinical Disease Activity Index (CDAI) instrument contains several measurements or scores used to determine rheumatoid arthritis disease activity. The overall CDAI score is calculated using a linear sum of the following: tender 28 joint count, swollen 28 joint count, patient global assessment (PtGA), and physician (or evaluator) global assessment (EGA). The CDAI uses the same measures as the Simple disease activity index (SDAI, LOINC 75843-3) except it does not include the measurement of C-reactive protein levels, an acute phase reactant.

Panel Hierarchy

Details for each LOINC in Panel LHC-Forms

LOINCNameR/O/CCardinalityExample UCUM Units
75842-5Clinical disease activity index [CDAI]
Indent88983-2Tender joint
Indent88984-0Swollen joint
Indent88981-6Tender joint #{#}
Indent88980-8Swollen joint #{#}
Indent75894-6Considering all the ways your arthritis affects you, how well you are doing?{score}
Indent75846-6Evaluator global assessment of disease activity - 0-10 (0.5 increments) numeric rating [Observed]{score}
Indent75847-4Total score [CDAI]{score}
Indent88982-4Rheumatoid arthritis disease activity level [CDAI]

LOINC Names Get Info

Fully-Specified Name
Clinical disease activity index:-:Pt:^Patient:-:CDAI
Long Common Name
Clinical disease activity index [CDAI]

Part Model Get Info

  • Component
    Clinical disease activity index
    LP186201-2
    • Analyte
      Clinical disease activity index
      LP186201-2
      • Component Numerator
        Clinical disease activity index
        LP186201-2
        • Component Numerator Core
          Clinical disease activity index
          LP186201-2
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    -
    LP6769-6
  • Time
    Pt
    LP6960-1
  • System
    ^Patient
    LP310005-6
    • System Core
      NULL
       
    • Super System
      Patient
      LP6985-8
  • Scale
    -
    LP7747-1
  • Method
    CDAI
    LP186113-9

Basic Attributes

Class
PANEL.SURVEY.GNHLTH
Type
Surveys
First Released
Version 2.50
Last Updated
Version 2.64 (MIN)
Order vs. Observation
Order
Panel Type
Panel

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=75842-5
Questionnaire definition
https://fhir.loinc.org/Questionnaire/?url=http://loinc.org/q/75842-5