LOINCActiveObservation

LOINC Code 91383-0: Medication duration - Reported

91383-0 is a LOINC code used to identify Medication duration - Reported 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 duration. 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 duration. 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: ACTIVE
  • Order vs observation: Observation
  • Method: Reported

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Medication duration - Reported
  • Medication duration
  • Actual duration of time that patient took a medication, as reported by the patient or patient proxy. Reported duration may differ from prescribed duration.
  • Durat; MEDS; 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 duration - ReportedMedication duration ReportedMedication durationMEDSTimePt^Patient

Frequently asked questions

Code details

Code91383-0
SystemLOINC
Display nameMedication duration - Reported
DescriptionMedication duration
Short nameMedication duration Reported
ComponentMedication duration
PropertyTime
TimingPt
System (specimen)^Patient
ScaleQn
MethodReported
ClassMEDS
Example unitsdays
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.66
Last changed2.66

Part names

Medication durationTimePt^PatientQnReportedTime (e.g. seconds)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 91383-0 | HealthAssure