What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 104949-3: Adverse reaction event summary Narrative

Name: LOINC Code 104949-3: Adverse reaction event summary Narrative
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:19.131Z

104949-3 is a LOINC code used to identify Adverse reaction event summary Narrative 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 Adverse reaction event summary. 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 Adverse reaction event summary. 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

Adverse reaction event summary Narrative
Adverse reaction event summary
ADMIN; Finding; Findings; Narrative; Point in time; Random; React; Report; Rxn

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

Adverse reaction event summary NarrativeAdverse reaction event summaryADMINFindPt^PatientNar

Frequently asked questions

Code details

Code104949-3

SystemLOINC

Display nameAdverse reaction event summary Narrative

DescriptionAdverse reaction event summary

Short nameAdverse reaction event summary

ComponentAdverse reaction event summary

PropertyFind

TimingPt

System (specimen)^Patient

ScaleNar

ClassADMIN

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.78

Last changed2.78

Part names

Adverse reaction event summaryFindPt^PatientNarFindingPoint 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.