What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 28988-4: Left eye Comment [Interpretation] by Keratometry

Name: LOINC Code 28988-4: Left eye Comment [Interpretation] by Keratometry
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:15.024Z

28988-4 is a LOINC code used to identify Left eye Comment [Interpretation] by Keratometry 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 Comment. It is commonly used with the system or sample type Eye.left.

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 Comment. It is commonly used with the system or sample type Eye.left.

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: Keratometry

What it does not mean

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

Key facts

Left eye Comment [Interpretation] by Keratometry
Comment
by KM; cmmt; cmnt; Com; Comm; Comments; Commt; Eye; EYE.REFRACTION; Eyeball; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; L; L eye; LT; Narrative; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophthalmometer; Ophtho; Ophthy; Optic globe; Point in time; Random; Remarks; Report; Vision; Visual

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

Left eye Comment [Interpretation] by KeratometryL eye Comment [Imp] by KMCommentEYE.REFRACTIONImpPtEye.left

Frequently asked questions

Code details

Code28988-4

SystemLOINC

Display nameLeft eye Comment [Interpretation] by Keratometry

DescriptionComment

Short nameL eye Comment [Imp] by KM

ComponentComment

PropertyImp

TimingPt

System (specimen)Eye.left

ScaleNar

MethodKeratometry

ClassEYE.REFRACTION

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.68

Part names

CommentImpPtEye.leftNarKeratometryImpression/interpretation of studyPoint in time (spot)Left eye

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.