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 64583-8: Date your child has taken this medication [PhenX]

Name: LOINC Code 64583-8: Date your child has taken this medication [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:43.951Z

64583-8 is a LOINC code used to identify Date your child has taken this medication [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 Date your child has taken this medication. 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 Date your child has taken this medication. 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

Date your child has taken this medication [PhenX]
Date your child has taken this medication
Child current medication date; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Date your child has taken this medication [PhenX]Child current medication date PhenXDate your child has taken this medicationPHENXDatePt^Patient

Frequently asked questions

Code details

Code64583-8

SystemLOINC

Display nameDate your child has taken this medication [PhenX]

DescriptionDate your child has taken this medication

Short nameChild current medication date PhenX

ComponentDate your child has taken this medication

PropertyDate

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example unitsMMDDYY

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

Date your child has taken this medicationDatePt^PatientQnPhenXPoint 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.