LOINCActive

LOINC Code 28788-8: Left corrective lens Prism base direction by Lensmeter

28788-8 is a LOINC code used to identify Left corrective lens Prism base direction by Lensmeter 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 Prism base direction. It is commonly used with the system or sample type Corrective lens.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 Prism base direction. It is commonly used with the system or sample type Corrective lens.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
  • Method: Lensmeter

What it does not mean

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

Key facts

  • Left corrective lens Prism base direction by Lensmeter
  • Prism base direction
  • by LM; Corr lens; EYE; EYE.GLASSES; Focimeter; L; L corr lens; Lensometer; LM; LT; Ophthalmology; Ophtho; Ophthy; Point in time; QNT; Quan; Quant; Quantitative; Random

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 corrective lens Prism base direction by LensmeterL corr lens Prism base dir by LMPrism base directionEYE.GLASSESAnglePtCorrective lens.left

Frequently asked questions

Code details

Code28788-8
SystemLOINC
Display nameLeft corrective lens Prism base direction by Lensmeter
DescriptionPrism base direction
Short nameL corr lens Prism base dir by LM
ComponentPrism base direction
PropertyAngle
TimingPt
System (specimen)Corrective lens.left
ScaleQn
MethodLensmeter
ClassEYE.GLASSES
Example unitsdeg
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.71

Part names

Prism base directionAnglePtCorrective lens.leftQnLensmeterPoint in time (spot)Left corrective lens

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 28788-8 | HealthAssure