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 66285-8: How many total hours a week did you usually do it [PhenX]

Name: LOINC Code 66285-8: How many total hours a week did you usually do it [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.459Z

66285-8 is a LOINC code used to identify How many total hours a week did you usually do it [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 total Hs a W did you usually do it. 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 total Hs a W did you usually do it. 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 total hours a week did you usually do it [PhenX]
How many total Hs a W did you usually do it
Activity total Hs; Count/time; nRate; Number rate; Number Rate = Count/Time; Point in time; QNT; Quan; Quant; Quantitative; Random; Tot; Totl

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 total hours a week did you usually do it [PhenX]Activity total Hs nRate PhenXHow many total Hs a W did you usually do itPHENXNRatPt^Patient

Frequently asked questions

Code details

Code66285-8

SystemLOINC

Display nameHow many total hours a week did you usually do it [PhenX]

DescriptionHow many total Hs a W did you usually do it

Short nameActivity total Hs nRate PhenX

ComponentHow many total Hs a W did you usually do it

PropertyNRat

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example unitshours/week

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.65

Part names

How many total Hs a W did you usually do itNRatPt^PatientQnPhenXHow many total hours a week did you usually do itNumber 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.