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R50.82 vs T80.52XA

R50.82 (Postprocedural fever) compared with T80.52XA (Anaphylactic reaction due to vaccination, initial encounter), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Relationship

Informational

Excludes2 relationship

T80.52XA
Anaphylactic reaction due to vaccination, initial encounter
R50.82
Postprocedural fever

Distinct conditions — both may be reported.

“postprocedural fever (R50.82)”

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. T80.52XA carries an Excludes2 note covering R50.82: “postprocedural fever (R50.82)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

R50.82Postprocedural feverT80.52XAAnaphylactic reaction due to vaccination, initial encounter
Billing statusBillableBillable
ClassificationR00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionPostprocedural fever is a billable ICD-10-CM diagnosis code (R50.82).Anaphylactic reaction due to vaccination, initial encounter is a billable ICD-10-CM diagnosis code (T80.52A).
7th characterThe appropriate 7th character is to be added to each code from category T80
Includes
complications following perfusion
Use additional code
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
code(s) to identify the specified condition resulting from the complication
code to identify devices involved and details of circumstances (Y62-Y82)

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources