LOINCActive

LOINC Code 28865-4: Contact lens Correction since

28865-4 is a LOINC code used to identify Contact lens Correction since 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 Correction since. It is commonly used with the system or sample type Contact lens.

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 Correction since. It is commonly used with the system or sample type Contact lens.

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

What it does not mean

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

Key facts

  • Contact lens Correction since
  • Correction since
  • Cont lens; Correctn; Date and time; EYE; EYE.CONTACT_LENS; Ophthalmology; Ophtho; Ophthy; Point in time; QNT; Quan; Quant; Quantitative; Random; Time stamp; Timestamp

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

Contact lens Correction sinceCont lens Correction sinceCorrection sinceEYE.CONTACT_LENSTmStpPtContact lens

Frequently asked questions

Code details

Code28865-4
SystemLOINC
Display nameContact lens Correction since
DescriptionCorrection since
Short nameCont lens Correction since
ComponentCorrection since
PropertyTmStp
TimingPt
System (specimen)Contact lens
ScaleQn
ClassEYE.CONTACT_LENS
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.68

Part names

Correction sinceTmStpPtContact lensQnTime Stamp (Date and Time)Point 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 28865-4 | HealthAssure