LOINCActiveObservation

LOINC Code 79790-2: Left retina Oscillatory potentials by ERG

79790-2 is a LOINC code used to identify Left retina Oscillatory potentials by ERG 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 Oscillatory potentials. It is commonly used with the system or sample type Retina.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 Oscillatory potentials. It is commonly used with the system or sample type Retina.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: Electroretinogram

What it does not mean

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

Key facts

  • Left retina Oscillatory potentials by ERG
  • Oscillatory potentials
  • 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).
  • ERG; EYE; EYE.ERG; EYE.ERG.NEI; Finding; Findings; L; L ret; LT; Nominal; Ophthalmology; Ophtho; Ophthy; Point in time; 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 retina Oscillatory potentials by ERGL ret Oscillatory pot ERGOscillatory potentialsEYE.ERG.NEIFindPtRetina.left

Frequently asked questions

Code details

Code79790-2
SystemLOINC
Display nameLeft retina Oscillatory potentials by ERG
DescriptionOscillatory potentials
Short nameL ret Oscillatory pot ERG
ComponentOscillatory potentials
PropertyFind
TimingPt
System (specimen)Retina.left
ScaleNom
MethodElectroretinogram
ClassEYE.ERG.NEI
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Oscillatory potentialsFindPtRetina.leftNomElectroretinogramFindingPoint in time (spot)Left retinaERG

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 79790-2 | HealthAssure