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.

LOINCActive

LOINC Code 66895-4: Have you ever been exposed to dangerous chemicals or radioactivity [LTVH]

Name: LOINC Code 66895-4: Have you ever been exposed to dangerous chemicals or radioactivity [LTVH]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:46.213Z

66895-4 is a LOINC code used to identify Have you ever been exposed to dangerous chemicals or radioactivity [LTVH] 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 Have you ever been exposed to dangerous chemicals or radioactivity. 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 Have you ever been exposed to dangerous chemicals or radioactivity. 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
Method: LTVH

What it does not mean

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

Key facts

Have you ever been exposed to dangerous chemicals or radioactivity [LTVH]
Have you ever been exposed to dangerous chemicals or radioactivity
Chemicals radiation; Finding; Findings; Ordinal; PhenX; 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

Have you ever been exposed to dangerous chemicals or radioactivity [LTVH]Chemicals radiation LTVHHave you ever been exposed to dangerous chemicals or radioactivityPHENXFindPt^Patient

Frequently asked questions

Code details

Code66895-4

SystemLOINC

Display nameHave you ever been exposed to dangerous chemicals or radioactivity [LTVH]

DescriptionHave you ever been exposed to dangerous chemicals or radioactivity

Short nameChemicals radiation LTVH

ComponentHave you ever been exposed to dangerous chemicals or radioactivity

PropertyFind

TimingPt

System (specimen)^Patient

ScaleOrd

MethodLTVH

ClassPHENX

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.65

Part names

Have you ever been exposed to dangerous chemicals or radioactivityFindPt^PatientOrdLTVHFindingPoint in time (spot)Lifetime Trauma and Victimization History survey

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.