LOINCActive

LOINC Code 29037-9: Left eye YAG

29037-9 is a LOINC code used to identify Left eye YAG 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 YAG Rx. 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 YAG Rx. 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

What it does not mean

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

Key facts

  • Left eye YAG
  • YAG Rx
  • Cnt; Count; Eye; EYE.RETINAL_RX; Eyeball; L; L eye; LT; Number; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Point in time; QNT; Quan; Quant; Quantitative; Random; Treatment; 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 YAGL eye YAGYAG RxEYE.RETINAL_RXNumPtEye.left

Frequently asked questions

Code details

Code29037-9
SystemLOINC
Display nameLeft eye YAG
DescriptionYAG Rx
Short nameL eye YAG
ComponentYAG Rx
PropertyNum
TimingPt
System (specimen)Eye.left
ScaleQn
ClassEYE.RETINAL_RX
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

YAG RxNumPtEye.leftQnNumber (count)Point 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.

LOINC Code 29037-9 | HealthAssure