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 63739-7: How many hours did you work last week at all jobs or businesses in the past week [NHANES]

Name: LOINC Code 63739-7: How many hours did you work last week at all jobs or businesses in the past week [NHANES]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:43.946Z

63739-7 is a LOINC code used to identify How many hours did you work last week at all jobs or businesses in the past week [NHANES] 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 H did you work last W at all jobs or businesses. 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 H did you work last W at all jobs or businesses. 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: NHANES

What it does not mean

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

Key facts

How many hours did you work last week at all jobs or businesses in the past week [NHANES]
How many H did you work last W at all jobs or businesses
1 week; Job; Occupation; Past; PhenX; QNT; Quan; Quant; Quantitative; Working H last W

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 hours did you work last week at all jobs or businesses in the past week [NHANES]Working H last W NHANESHow many H did you work last W at all jobs or businessesPHENXTime1W^Patient

Frequently asked questions

Code details

Code63739-7

SystemLOINC

Display nameHow many hours did you work last week at all jobs or businesses in the past week [NHANES]

DescriptionHow many H did you work last W at all jobs or businesses

Short nameWorking H last W NHANES

ComponentHow many H did you work last W at all jobs or businesses

PropertyTime

Timing1W

System (specimen)^Patient

ScaleQn

MethodNHANES

ClassPHENX

Example unitshours

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

How many H did you work last W at all jobs or businessesTime1W^PatientQnNHANESHow many hours did you work last week at all jobs or businessesTime (e.g. seconds)1 week

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.