LOINCActive

LOINC Code 63581-3: Smoked at least 100 cigarettes in entire life

63581-3 is a LOINC code used to identify Smoked at least 100 cigarettes in entire life 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 Smoked at least 100 cigarettes in entire life. 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 Smoked at least 100 cigarettes in entire life. 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

What it does not mean

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

Key facts

  • Smoked at least 100 cigarettes in entire life
  • Finding; Findings; H+P; H+P.HX; Ordinal; P prime; Point in time; QL; Qual; Qualitative; Random; Screen; Smoked 100 Cigs entire life

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

Smoked at least 100 cigarettes in entire lifeSmoked 100 Cigs entire lifeH&P.HXFindPt^PatientOrd

Frequently asked questions

Code details

Code63581-3
SystemLOINC
Display nameSmoked at least 100 cigarettes in entire life
Short nameSmoked 100 Cigs entire life
ComponentSmoked at least 100 cigarettes in entire life
PropertyFind
TimingPt
System (specimen)^Patient
ScaleOrd
ClassH&P.HX
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.68

Part names

Smoked at least 100 cigarettes in entire lifeFindPt^PatientOrdFindingPoint in time (spot)

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.