LOINC Code 66609-9: Retinal change or optic atrophy [Reported]
66609-9 is a LOINC code used to identify Retinal change or optic atrophy [Reported] 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 Retinal change or optic atrophy. It is commonly used with the system or sample type ^Patient.
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 Retinal change or optic atrophy. 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: TRIAL
- Method: Reported
What it does not mean
- The code identifies the observation or test, not the actual result.
Key facts
- Retinal change or optic atrophy [Reported]
- Retinal change or optic atrophy
- Exchange; History; Ordinal; PhenX; Point in time; QL; Qual; Qualitative; Random; Replace; Retinaldehyde; Retinene; Retinene 1; Screen; Vit A aldehyde; Vit A1 aldehyde; Vitamin A aldehyde; Vitamin A1 aldehyde
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
Frequently asked questions
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.