LOINC

LOINC Code 64435-1: Medication time and date [PhenX] --Pre excercise

64435-1 is a LOINC code used to identify Medication time and date [PhenX] --Pre excercise 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 Medication time and date^pre exercise. 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 Medication time and date^pre exercise. 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

  • Medication time and date [PhenX] --Pre excercise
  • Medication time and date^pre exercise
  • Before; Date and time; EXCZ; Medication time date; Point in time; pre Exc; Pre exercise; QNT; Quan; Quant; Quantitative; Random; Time stamp; Timestamp

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

Medication time and date [PhenX] --Pre excerciseMedication time date pre Exc PhenXMedication time and date^pre exercisePHENXTmStpPt^Patient

Frequently asked questions

Code details

Code64435-1
SystemLOINC
Display nameMedication time and date [PhenX] --Pre excercise
DescriptionMedication time and date^pre exercise
Short nameMedication time date pre Exc PhenX
ComponentMedication time and date^pre exercise
PropertyTmStp
TimingPt
System (specimen)^Patient
ScaleQn
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.65

Part names

Medication time and date^pre exerciseTmStpPt^PatientQnPhenXTime Stamp (Date and Time)Point 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.

LOINC Code 64435-1 | HealthAssure