LOINCActiveObservation

LOINC Code 79831-4: Right eye Axis--WO cycloplegia by Objective refraction

79831-4 is a LOINC code used to identify Right eye Axis--WO cycloplegia by Objective refraction 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 Axis^WO cycloplegia. It is commonly used with the system or sample type Eye.right.

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 Axis^WO cycloplegia. It is commonly used with the system or sample type Eye.right.

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: Objective refraction

What it does not mean

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

Key facts

  • Right eye Axis--WO cycloplegia by Objective refraction
  • Axis^WO cycloplegia
  • This term was developed in collaboration with the National Institute of Health's National Eye Institute (NEI) as part of an effort to standardize the data elements collected by the National Ophthalmic Disease Genotyping and Phenotyping Network (eyeGENE).
  • Eye; EYE.REFRACTION; EYE.REFRACTION.NEI; Eyeball; Obj refraction; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Point in time; QNT; Quan; Quant; Quantitative; R; R eye; Random; RT; 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

Right eye Axis--WO cycloplegia by Objective refractionR eye Axis--WO cyclo Obj refractionAxis^WO cycloplegiaEYE.REFRACTION.NEIAnglePtEye.right

Frequently asked questions

Code details

Code79831-4
SystemLOINC
Display nameRight eye Axis--WO cycloplegia by Objective refraction
DescriptionAxis^WO cycloplegia
Short nameR eye Axis--WO cyclo Obj refraction
ComponentAxis^WO cycloplegia
PropertyAngle
TimingPt
System (specimen)Eye.right
ScaleQn
MethodObjective refraction
ClassEYE.REFRACTION.NEI
Example unitsdeg
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.68

Part names

Axis^WO cycloplegiaAnglePtEye.rightQnObjective refractionPoint in time (spot)Right eyeby Objective refraction

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 79831-4 | HealthAssure