LOINCActiveObservation

LOINC Code 83313-7: Injection drug use in the past year

83313-7 is a LOINC code used to identify Injection drug use 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 Injection drug use 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 Injection drug use 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

  • Injection drug use in the past year
  • Injection drug use in the past Y
  • This term is used to report whether the respondent has engaged 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.
  • Drugs; Finding; Findings; H+P; H+P.HX; IDU; Inj; Inj drug use in past Y; Intravenous drug use; IVDU; Last; Ordinal; P prime; QL; Qual; Qualitative; 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

Injection drug use in the past yearInj drug use in past YInjection drug use in the past YH&P.HXFind1Y^Patient

Frequently asked questions

Code details

Code83313-7
SystemLOINC
Display nameInjection drug use in the past year
DescriptionInjection drug use in the past Y
Short nameInj drug use in past Y
ComponentInjection drug use 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 changed2.58

Part names

Injection drug use in the past YFind1Y^PatientOrdInjection drug use 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.