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 50400-1: Body temperature --after transfusion reaction

Name: LOINC Code 50400-1: Body temperature --after transfusion reaction
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:34.496Z

50400-1 is a LOINC code used to identify Body temperature --after transfusion reaction 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 Body temperature^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 Body temperature^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

Body temperature --after transfusion reaction
Body temperature^post transfusion reaction
After; Bdy temp; bod; Bodies; BODY TEMPERATURE.ATOM; p transf; p transf rx; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; React; Rxn; Temp; Temperature; 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

Body temperature --after transfusion reactionBdy temp p transf rxBody temperature^post transfusion reactionBDYTMP.ATOMtemperature - after Transfusion ReactionTempPt

Frequently asked questions

Code details

Code50400-1

SystemLOINC

Display nameBody temperature --after transfusion reaction

DescriptionBody temperature^post transfusion reaction

Short nameBdy temp p transf rx

ComponentBody temperature^post transfusion reaction

PropertyTemp

TimingPt

System (specimen)^Patient

ScaleQn

ClassBDYTMP.ATOM

Example unitsdeg F; deg C

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.73

Consumer names

temperature - after Transfusion Reaction

Part names

Body temperature^post transfusion reactionTempPt^PatientQnTemperaturePoint 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.