LOINC

LOINC Code 64231-4: How many cigars are you smoking per week now [PhenX]

64231-4 is a LOINC code used to identify How many cigars are you smoking per week now [PhenX] 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 many cigars are you smoking per W now. 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 many cigars are you smoking per W now. 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: TRIAL
  • Method: PhenX

What it does not mean

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

Key facts

  • How many cigars are you smoking per week now [PhenX]
  • How many cigars are you smoking per W now
  • Cigars quant W now; Count/time; nRate; Number rate; Number Rate = Count/Time; 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 many cigars are you smoking per week now [PhenX]Cigars quant W now nRate PhenXHow many cigars are you smoking per W nowPHENXNRatPt^Patient

Frequently asked questions

Code details

Code64231-4
SystemLOINC
Display nameHow many cigars are you smoking per week now [PhenX]
DescriptionHow many cigars are you smoking per W now
Short nameCigars quant W now nRate PhenX
ComponentHow many cigars are you smoking per W now
PropertyNRat
TimingPt
System (specimen)^Patient
ScaleQn
MethodPhenX
ClassPHENX
Example units/week
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.65

Part names

How many cigars are you smoking per W nowNRatPt^PatientQnPhenXHow many cigars are you smoking per week nowNumber RatePoint 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.

LOINC Code 64231-4 | HealthAssure