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 83318-6: Sexual activity with known intravenous drug user in the past year

Name: LOINC Code 83318-6: Sexual activity with known intravenous drug user in the past year
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:10.308Z

83318-6 is a LOINC code used to identify Sexual activity with known intravenous drug user in the past year 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 Sexual activity with known IV drug user in the past Y. 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 Sexual activity with known IV drug user in the past Y. 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

Sexual activity with known intravenous drug user in the past year
Sexual activity with known IV drug user in the past Y
This term is used to report whether the respondent had sex with someone that he or she knew to engage in injection drug use (IDU) in the past year. IDU includes intravenous drug use (IVDU), which is the most common, as well as subcutaneous and intramuscular injection. This term was created for, but is not limited in use to, Centers for Disease Control and Prevention (CDC) sexually transmitted diseases case reporting and surveillance programs.
Activ; Actvty; Drugs; Finding; Findings; H+P; H+P.HX; IDU; Injection drug use; Intravenous drug use; IVDU; Last; Movements; Ordinal; P prime; QL; Qual; Qualitative; Screen; Sex w known IV drug user in past Y

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

Sexual activity with known intravenous drug user in the past yearSex w known IV drug user in past YSexual activity with known IV drug user in the past YH&P.HXFind1Y^Patient

Frequently asked questions

Code details

Code83318-6

SystemLOINC

Display nameSexual activity with known intravenous drug user in the past year

DescriptionSexual activity with known IV drug user in the past Y

Short nameSex w known IV drug user in past Y

ComponentSexual activity with known IV drug user in the past Y

PropertyFind

Timing1Y

System (specimen)^Patient

ScaleOrd

ClassH&P.HX

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.58

Last changed2.66

Part names

Sexual activity with known IV drug user in the past YFind1Y^PatientOrdSexual activity with known intravenous drug user in the past yearFinding1 year

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.