LOINCActiveObservation

LOINC Code 79440-4: Pain score change [KOOS]

79440-4 is a LOINC code used to identify Pain score change [KOOS] 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 Pain score change. 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 Pain score change. 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: KOOS

What it does not mean

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

Key facts

  • Pain score change [KOOS]
  • Pain score change
  • The pain score change between different administrations of the KOOS (e.g. pre-treatment to post-treatment).
  • Exchange; Knee Injury and Osteoarthritis Outcome Score; KOOS JR; KOOS, JR; Point in time; QNT; Quan; Quant; Quantitative; Random; Replace; Score difference; 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

Pain score change [KOOS]Pain score changeSURVEY.GNHLTHScoreDiffPt^PatientQn

Frequently asked questions

Code details

Code79440-4
SystemLOINC
Display namePain score change [KOOS]
DescriptionPain score change
ComponentPain score change
PropertyScoreDiff
TimingPt
System (specimen)^Patient
ScaleQn
MethodKOOS
ClassSURVEY.GNHLTH
Example unitsscore
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.54

Part names

Pain score changeScoreDiffPt^PatientQnKOOSScore differencePoint in time (spot)Knee Injury and Osteoarthritis Outcome Score

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 79440-4 | HealthAssure