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 63609-2: How old were you when you first started smoking cigarettes every day [TUS-CPS]

Name: LOINC Code 63609-2: How old were you when you first started smoking cigarettes every day [TUS-CPS]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:42.802Z

63609-2 is a LOINC code used to identify How old were you when you first started smoking cigarettes every day [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 How old were you when you first started smoking cigarettes every day. 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 How old were you when you first started smoking cigarettes every day. 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

How old were you when you first started smoking cigarettes every day [TUS-CPS]

How old were you when you first started smoking cigarettes every day

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

First smoking every day age; PhenX; Point in time; QNT; Quan; Quant; Quantitative; Random

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

How old were you when you first started smoking cigarettes every day [TUS-CPS]First smoking every day age TUS-CPSHow old were you when you first started smoking cigarettes every dayPHENXTimePt^Patient

Frequently asked questions

Code details

Code63609-2

SystemLOINC

Display nameHow old were you when you first started smoking cigarettes every day [TUS-CPS]

DescriptionHow old were you when you first started smoking cigarettes every day

Short nameFirst smoking every day age TUS-CPS

ComponentHow old were you when you first started smoking cigarettes every day

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

MethodTUS-CPS

ClassPHENX

Example unitsyears

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

How old were you when you first started smoking cigarettes every dayTimePt^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.