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 63632-4: About how long has it been since you completely quit smoking cigarettes [TUS-CPS]

Name: LOINC Code 63632-4: About how long has it been since you completely quit smoking cigarettes [TUS-CPS]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:42.802Z

63632-4 is a LOINC code used to identify About how long has it been since you completely quit smoking cigarettes [TUS-CPS] 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 About how long has it been since you completely quit smoking cigarettes. 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 About how long has it been since you completely quit smoking cigarettes. 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: TUS-CPS

What it does not mean

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

Key facts

About how long has it been since you completely quit smoking cigarettes [TUS-CPS]

About how long has it been since you completely quit smoking cigarettes

Note to interviewerRespondents who were classified as a "Former Smoker" by answering the Tobacco - Smoking Status adult protocol, Question 1 as ""Yes"" (Have you smoked at least 100 cigarettes in your entire life?) and Question 2 as ""Not at all"" (Do you now smoke every day, some days or not at all?) are asked.

PhenX; Point in time; QNT; Quan; Quant; Quantitative; Random; Smoke cessation time number

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

About how long has it been since you completely quit smoking cigarettes [TUS-CPS]Smoke cessation time number TUS-CPSAbout how long has it been since you completely quit smoking cigarettesPHENXTimePt^Patient

Frequently asked questions

Code details

Code63632-4

SystemLOINC

Display nameAbout how long has it been since you completely quit smoking cigarettes [TUS-CPS]

DescriptionAbout how long has it been since you completely quit smoking cigarettes

Short nameSmoke cessation time number TUS-CPS

ComponentAbout how long has it been since you completely quit smoking cigarettes

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

MethodTUS-CPS

ClassPHENX

Example unitsD, W, Mo, Y

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

About how long has it been since you completely quit smoking cigarettesTimePt^PatientQnTUS-CPSTime (e.g. seconds)Point 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.