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 63738-9: How many years were you regularly exposed to this material [ACSCP-II]

Name: LOINC Code 63738-9: How many years were you regularly exposed to this material [ACSCP-II]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:43.946Z

63738-9 is a LOINC code used to identify How many years were you regularly exposed to this material [ACSCP-II] 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 How many Y were you regularly exposed to this material. 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 How many Y were you regularly exposed to this material. 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: ACSCP Study II

What it does not mean

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

Key facts

How many years were you regularly exposed to this material [ACSCP-II]
How many Y were you regularly exposed to this material
2; ACSCP-II; Exposure Ys; PhenX; Point in time; QNT; Quan; Quant; Quantitative; Random

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

How many years were you regularly exposed to this material [ACSCP-II]Exposure Ys ACSCP-IIHow many Y were you regularly exposed to this materialPHENXTimePt^Patient

Frequently asked questions

Code details

Code63738-9

SystemLOINC

Display nameHow many years were you regularly exposed to this material [ACSCP-II]

DescriptionHow many Y were you regularly exposed to this material

Short nameExposure Ys ACSCP-II

ComponentHow many Y were you regularly exposed to this material

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

MethodACSCP Study II

ClassPHENX

Example unitsyears

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

How many Y were you regularly exposed to this materialTimePt^PatientQnACSCP Study IIHow many years were you regularly exposed to this materialTime (e.g. seconds)Point in time (spot)ACSCP-II

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.