LOINCActive

LOINC Code 42554-6: Event description accident MERSTH

42554-6 is a LOINC code used to identify Event description accident MERSTH 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 Event description.accident. 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 Event description.accident. 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
  • Method: Observed.MERSTH

What it does not mean

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

Key facts

  • Event description accident MERSTH
  • Event description.accident
  • Event Desc accident; Finding; Findings; Medical Event Reporting System-Total Health System; Nominal; Patient safety; Point in time; 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

Event description accident MERSTHEvent Desc accident MERSTHEvent description.accidentPATIENT SAFETYFindPt^Patient

Frequently asked questions

Code details

Code42554-6
SystemLOINC
Display nameEvent description accident MERSTH
DescriptionEvent description.accident
Short nameEvent Desc accident MERSTH
ComponentEvent description.accident
PropertyFind
TimingPt
System (specimen)^Patient
ScaleNom
MethodObserved.MERSTH
ClassPATIENT SAFETY
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.16
Last changed2.27

Part names

Event description.accidentFindPt^PatientNomObserved.MERSTHEvent description accidentFindingPoint 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 42554-6 | HealthAssure