LOINCActiveObservation

LOINC Code 78926-3: Myocardial infarction in past 24 hours

78926-3 is a LOINC code used to identify Myocardial infarction in past 24 hours 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 Myocardial infarction in past 24H. 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 Myocardial infarction in past 24H. 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

What it does not mean

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

Key facts

  • Myocardial infarction in past 24 hours
  • Myocardial infarction in past 24H
  • 1 day; 24 hours; 24H; 24HR; Finding; Findings; H+P; H+P.HX; Last; MI in past 24H; Ordinal; P prime; QL; Qual; Qualitative; 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

Myocardial infarction in past 24 hoursMI in past 24HMyocardial infarction in past 24HH&P.HXFind1D^Patient

Frequently asked questions

Code details

Code78926-3
SystemLOINC
Display nameMyocardial infarction in past 24 hours
DescriptionMyocardial infarction in past 24H
Short nameMI in past 24H
ComponentMyocardial infarction in past 24H
PropertyFind
Timing1D
System (specimen)^Patient
ScaleOrd
ClassH&P.HX
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.54

Part names

Myocardial infarction in past 24HFind1D^PatientOrdMyocardial infarction in past 24 hoursFinding1 day

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 78926-3 | HealthAssure