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.

LOINC

LOINC Code 64254-6: In the past 12 months, have you had periods or episodes of cough with phlegm that lasted 1 week or more [PhenX]

Name: LOINC Code 64254-6: In the past 12 months, have you had periods or episodes of cough with phlegm that lasted 1 week or more [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:43.949Z

64254-6 is a LOINC code used to identify In the past 12 months, have you had periods or episodes of cough with phlegm that lasted 1 week or more [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 In the past 12Mo, have you had periods or episodes of cough with phlegm that lasted 1 W or more. 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 In the past 12Mo, have you had periods or episodes of cough with phlegm that lasted 1 W or more. 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

In the past 12 months, have you had periods or episodes of cough with phlegm that lasted 1 week or more [PhenX]
In the past 12Mo, have you had periods or episodes of cough with phlegm that lasted 1 W or more
1 year; 12Mos; Finding; Findings; Hx cough phlegm > 1W; i; Last; Ordinal; 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

In the past 12 months, have you had periods or episodes of cough with phlegm that lasted 1 week or more [PhenX]Hx cough phlegm > 1W PhenXIn the past 12Mo, have you had periods or episodes of cough with phlegm that lasted 1 W or morePHENXFind12Mo^Patient

Frequently asked questions

Code details

Code64254-6

SystemLOINC

Display nameIn the past 12 months, have you had periods or episodes of cough with phlegm that lasted 1 week or more [PhenX]

DescriptionIn the past 12Mo, have you had periods or episodes of cough with phlegm that lasted 1 W or more

Short nameHx cough phlegm > 1W PhenX

ComponentIn the past 12Mo, have you had periods or episodes of cough with phlegm that lasted 1 W or more

PropertyFind

Timing12Mo

System (specimen)^Patient

ScaleOrd

MethodPhenX

ClassPHENX

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

In the past 12Mo, have you had periods or episodes of cough with phlegm that lasted 1 W or moreFind12Mo^PatientOrdPhenXIn the past 12 months, have you had periods or episodes of cough with phlegm that lasted 1 week or moreFinding12 months

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.