What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 79734-0: Initial unilateral retinoblastoma that later developed into bilateral disease

Name: LOINC Code 79734-0: Initial unilateral retinoblastoma that later developed into bilateral disease
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:01.838Z

79734-0 is a LOINC code used to identify Initial unilateral retinoblastoma that later developed into bilateral disease 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 Initial unilateral retinoblastoma that later developed into bilateral disease. 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 Initial unilateral retinoblastoma that later developed into bilateral disease. 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

What it does not mean

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

Key facts

Initial unilateral retinoblastoma that later developed into bilateral disease
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).
Bil; Bilat; Both; Dis; Diseases; Dz; EYE; EYE.HX; EYE.HX.NEI; History; Initial unilat RB dev into bilat dis; Ophthalmology; Ophtho; Ophthy; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen

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

Initial unilateral retinoblastoma that later developed into bilateral diseaseInitial unilat RB dev into bilat disEYE.HX.NEIHxPt^PatientOrd

Frequently asked questions

Code details

Code79734-0

SystemLOINC

Display nameInitial unilateral retinoblastoma that later developed into bilateral disease

Short nameInitial unilat RB dev into bilat dis

ComponentInitial unilateral retinoblastoma that later developed into bilateral disease

PropertyHx

TimingPt

System (specimen)^Patient

ScaleOrd

ClassEYE.HX.NEI

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.54

Part names

Initial unilateral retinoblastoma that later developed into bilateral diseaseHxPt^PatientOrdHistoryPoint in time (spot)

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.