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.

LOINC

LOINC Code 64820-4: Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease [PhenX]

Name: LOINC Code 64820-4: Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:44.550Z

64820-4 is a LOINC code used to identify Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease [PhenX] 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 Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye 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 Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye 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: TRIAL
Method: PhenX

What it does not mean

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

Key facts

Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease [PhenX]
Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease
Diabetic retinopathy ever; Dis; Diseases; Dz; Finding; Findings; 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

Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease [PhenX]Diabetic retinopathy ever PhenXHas a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye diseasePHENXFindPt^Patient

Frequently asked questions

Code details

Code64820-4

SystemLOINC

Display nameHas a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease [PhenX]

DescriptionHas a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease

Short nameDiabetic retinopathy ever PhenX

ComponentHas a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye disease

PropertyFind

TimingPt

System (specimen)^Patient

ScaleOrd

MethodPhenX

ClassPHENX

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

Has a medical doctor ever told you that diabetes has affected blood vessels in your eyes or that you had diabetic retinopathy or diabetic eye diseaseFindPt^PatientOrdPhenXFindingPoint 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.