LOINCActiveObservation

LOINC Code 79800-9: ERG ISCEV standard protocol followed

79800-9 is a LOINC code used to identify ERG ISCEV standard protocol followed 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 ISCEV standard protocol used. It is commonly used with the system or sample type ^Patient.

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 ISCEV standard protocol used. It is commonly used with the system or sample type ^Patient.

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

  • ERG ISCEV standard protocol followed
  • ISCEV standard protocol used
  • 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; Nominal; Ophthalmology; Ophtho; Ophthy; Point in time; Random; Typ

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

ERG ISCEV standard protocol followedERG ISCEV standard protocol usedISCEV standard protocol usedEYE.ERG.NEITypePt^Patient

Frequently asked questions

Code details

Code79800-9
SystemLOINC
Display nameERG ISCEV standard protocol followed
DescriptionISCEV standard protocol used
Short nameERG ISCEV standard protocol used
ComponentISCEV standard protocol used
PropertyType
TimingPt
System (specimen)^Patient
ScaleNom
MethodElectroretinogram
ClassEYE.ERG.NEI
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

ISCEV standard protocol usedTypePt^PatientNomElectroretinogramPoint in time (spot)ERG

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 79800-9 | HealthAssure