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 64804-8: What was your main daytime activity or job when you turned 18 [PhenX]

Name: LOINC Code 64804-8: What was your main daytime activity or job when you turned 18 [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:44.549Z

64804-8 is a LOINC code used to identify What was your main daytime activity or job when you turned 18 [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 What was your main daytime activity or job when you turned 18. 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 What was your main daytime activity or job when you turned 18. 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

What was your main daytime activity or job when you turned 18 [PhenX]
What was your main daytime activity or job when you turned 18
Activ; Actvty; Daytime activity job 18; Finding; Findings; Movements; Nominal; Occupation; Point in time; Random; Work

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

What was your main daytime activity or job when you turned 18 [PhenX]Daytime activity job 18 PhenXWhat was your main daytime activity or job when you turned 18PHENXFindPt^Patient

Frequently asked questions

Code details

Code64804-8

SystemLOINC

Display nameWhat was your main daytime activity or job when you turned 18 [PhenX]

DescriptionWhat was your main daytime activity or job when you turned 18

Short nameDaytime activity job 18 PhenX

ComponentWhat was your main daytime activity or job when you turned 18

PropertyFind

TimingPt

System (specimen)^Patient

ScaleNom

MethodPhenX

ClassPHENX

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

What was your main daytime activity or job when you turned 18FindPt^PatientNomPhenXFindingPoint 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.