LOINCActiveObservation

LOINC Code 95529-4: Tobacco use in the past year

95529-4 is a LOINC code used to identify Tobacco 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 Tobacco use in the past 1Y. 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 Tobacco use in the past 1Y. 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

  • Tobacco use in the past year
  • Tobacco use in the past 1Y
  • Finding; Findings; H+P; H+P.HX; 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

Tobacco use in the past yearTobacco use 1YTobacco use in the past 1YH&P.HXFind1Y^Patient

Frequently asked questions

Code details

Code95529-4
SystemLOINC
Display nameTobacco use in the past year
DescriptionTobacco use in the past 1Y
Short nameTobacco use 1Y
ComponentTobacco use in the past 1Y
PropertyFind
Timing1Y
System (specimen)^Patient
ScaleOrd
ClassH&P.HX
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.69
Last changed2.69

Part names

Tobacco use in the past 1YFind1Y^PatientOrdTobacco 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.

LOINC Code 95529-4 | HealthAssure