What does ICD-10 code R50.83 mean?

ICD-10 code R50.83 is the standardized code used for postvaccination fever in medical records and coding systems.

When is ICD-10 code R50.83 used?

Doctors, hospitals, and insurers may use ICD-10 code R50.83 when recording postvaccination fever in a standardized format.

Does ICD-10 code R50.83 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10BillableValid for clinical use

ICD-10 Code R50.83: Postvaccination fever

Name: ICD-10 Code R50.83: Postvaccination fever
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:30:40.697Z

R50.83 is a billable ICD-10 diagnosis code used to classify Postvaccination fever in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).

When is it used?

May be used when a clinician documents postvaccination fever in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter

18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

block

R50-R69General symptoms and signs

Official coding notes

Inclusion terms

Postimmunization fever

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

General Physician

Sibling codes

R50.81Fever presenting with conditions classified elsewherebillable R50.82Postprocedural feverbillable R50.84Febrile nonhemolytic transfusion reactionbillable

Coding guidelines

Common synonyms

Postvaccination fever

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. 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.