LOINCActiveObservation

LOINC Code 88982-4: Rheumatoid arthritis disease activity level [CDAI]

88982-4 is a LOINC code used to identify Rheumatoid arthritis disease activity level [CDAI] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Rheumatoid arthritis disease activity level. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Rheumatoid arthritis disease activity level. It is commonly used with the system or sample type ^Patient.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Observation
  • Method: CDAI

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

Rheumatoid arthritis disease activity level [CDAI]
Rheumatoid arthritis disease activity level
The Clinical Disease Activity Index is a measure of a patient's Rheumatoid Arthritis activity. Upper extremity joints are assessed for swelling and tenderness, and a separate score is assigned for overall number of tender joints and overall swollen joints. The final score is the sum of the tender and swollen joint scores ([LOINC88981-6] and [LOINC:88980-8]) along with the scores of the Patient Global Assessment of Disease Activity [LOINC:75894-6] and the Provider Global Assessment of Disease Activity [LOINC:75846-6]. The total score is interpreted as follows: 0.0-2.8: Remission; 2.9-10.0: Low Activity; 10.1-22.0: Moderate Activity; 22.1-76.0: High Activity. [https://www.rheumatology.org/Portals/0/Files/CDAI%20Form.pdf]
Activ; Actvty; Arth; Clinical Disease Activity Index; Dis; Diseases; Dz; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Levels; Levl; LV; LVL; MDAS; Movements; Multi-biomarker disease activity score; Ordinal; Point in time; QL; Qual; Qualitative; RA; Random; Screen; Survey; SURVEY.GNHLTH

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Rheumatoid arthritis disease activity level [CDAI]Rheumatoid arthritis disease activity levelSURVEY.GNHLTHImpPt^PatientOrd

Frequently asked questions

Code details

Code88982-4
SystemLOINC
Display nameRheumatoid arthritis disease activity level [CDAI]
DescriptionRheumatoid arthritis disease activity level
ComponentRheumatoid arthritis disease activity level
PropertyImp
TimingPt
System (specimen)^Patient
ScaleOrd
MethodCDAI
ClassSURVEY.GNHLTH
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.64
Last changed2.65

Part names

Rheumatoid arthritis disease activity levelImpPt^PatientOrdCDAIImpression/interpretation of studyPoint in time (spot)Clinical Disease Activity Index

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 88982-4 | HealthAssure