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 50405-0: Patient symptoms post transfusion reaction Nar [Interp]

Name: LOINC Code 50405-0: Patient symptoms post transfusion reaction Nar [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:34.496Z

50405-0 is a LOINC code used to identify Patient symptoms post transfusion reaction Nar [Interp] 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 Patient symptoms^post transfusion reaction. 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 Patient symptoms^post transfusion reaction. 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

Patient symptoms [Interpretation] Narrative--after transfusion reaction
Patient symptoms^post transfusion reaction
After; BLOOD BANK; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Narrative; p transf; p transf rx; Point in time; PST; Random; React; Report; Rxn; Sx; Transf React; Tx

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

Patient symptoms post transfusion reaction Nar [Interp]Patient symptoms [Interpretation] Narrative--after transfusion reactionSymptoms p transf rx Patient-ImpPatient symptoms^post transfusion reactionBLDBKInterpretation of Patient symptoms after Transfusion Reaction test resultImp

Frequently asked questions

Code details

Code50405-0

SystemLOINC

Display namePatient symptoms post transfusion reaction Nar [Interp]

DescriptionPatient symptoms^post transfusion reaction

Short nameSymptoms p transf rx Patient-Imp

ComponentPatient symptoms^post transfusion reaction

PropertyImp

TimingPt

System (specimen)^Patient

ScaleNar

ClassBLDBK

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.73

Consumer names

Interpretation of Patient symptoms after Transfusion Reaction test result

Part names

Patient symptoms^post transfusion reactionImpPt^PatientNarImpression/interpretation of studyPoint 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.