ICD-10 Code for Carditis
Also indexed as (acute) (bacterial) (chronic) (subacute)
The ICD-10-CM code for carditis is I51.89 — Other ill-defined heart diseases. This is the code the Alphabetic Index gives for carditis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
Billable
Which carditis code should you use?
The Alphabetic Index lists 3 codes under Carditis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources