LOINC

LOINC Code 66424-3: Medication strength [Dosage] Current medication [PhenX]

66424-3 is a LOINC code used to identify Medication strength [Dosage] Current 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 Medication strength. It is commonly used with the system or sample type Medication.current.

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 strength. It is commonly used with the system or sample type Medication.current.

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 strength [Dosage] Current medication [PhenX]
  • Medication strength
  • Med; Med strength; 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

Medication strength [Dosage] Current medication [PhenX]Med strength Medication.current PhenXMedication strengthPHENXDosagePtMedication.current

Frequently asked questions

Code details

Code66424-3
SystemLOINC
Display nameMedication strength [Dosage] Current medication [PhenX]
DescriptionMedication strength
Short nameMed strength Medication.current PhenX
ComponentMedication strength
PropertyDosage
TimingPt
System (specimen)Medication.current
ScaleQn
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Medication strengthDosagePtMedication.currentQnPhenXPoint in time (spot)Medication current

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 66424-3 | HealthAssure