LOINCActiveObservation

LOINC Code 88984-0: Swollen joint

88984-0 is a LOINC code used to identify Swollen joint 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 Swollen joint. 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 Swollen joint. 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

What it does not mean

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

Key facts

  • Swollen joint
  • This term was created for, but is not limited in use to, the Clinical Disease Activity Index (CDAI). For the CDAI, 28 joints are counted which includes shoulders, elbows, wrists, metacarpophalangeals (MCPs), proximal interphalangeals (PIPs) including thumb IP, and knees. Note that none of the lower extremity joints other than the knees are counted in the CDAI.
  • Anatomy; Nominal; Point in time; Random; 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

Swollen jointSURVEY.GNHLTHAnatPt^PatientNomAnatomy

Frequently asked questions

Code details

Code88984-0
SystemLOINC
Display nameSwollen joint
ComponentSwollen joint
PropertyAnat
TimingPt
System (specimen)^Patient
ScaleNom
ClassSURVEY.GNHLTH
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Swollen jointAnatPt^PatientNomAnatomyPoint in time (spot)

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 88984-0 | HealthAssure