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 66324-5: Records how many days the actigraph was worn on actigraph return and reading form [PhenX]

Name: LOINC Code 66324-5: Records how many days the actigraph was worn on actigraph return and reading form [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.459Z

66324-5 is a LOINC code used to identify Records how many days the actigraph was worn on actigraph return and reading form [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 Records how many Ds the actigraph was worn on actigraph return and reading form. 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 Records how many Ds the actigraph was worn on actigraph return and reading form. 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

Records how many days the actigraph was worn on actigraph return and reading form [PhenX]
Records how many Ds the actigraph was worn on actigraph return and reading form
# D AG was worn on; Finding; Findings; Ordinal; Point in time; QL; Qual; Qualitative; Random; 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

Records how many days the actigraph was worn on actigraph return and reading form [PhenX]# D AG was worn on PhenXRecords how many Ds the actigraph was worn on actigraph return and reading formPHENXFindPt^Patient

Frequently asked questions

Code details

Code66324-5

SystemLOINC

Display nameRecords how many days the actigraph was worn on actigraph return and reading form [PhenX]

DescriptionRecords how many Ds the actigraph was worn on actigraph return and reading form

Short name# D AG was worn on PhenX

ComponentRecords how many Ds the actigraph was worn on actigraph return and reading form

PropertyFind

TimingPt

System (specimen)^Patient

ScaleOrd

MethodPhenX

ClassPHENX

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.65

Part names

Records how many Ds the actigraph was worn on actigraph return and reading formFindPt^PatientOrdPhenXRecords how many days the actigraph was worn on actigraph return and reading formFindingPoint 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.