ICD-10 Code I30.1 – Infective pericarditis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I30.1 – Infective pericarditis
What it is
I30.1 identifies infective pericarditis, an inflammation of the pericardial sac caused by an infectious process. Use it when documentation clearly states the pericarditis is infectious in origin.
Clinical signs
Typical findings include chest pain, pericardial friction rub, and evidence of pericardial inflammation on exam or imaging. Clinical features vary; refer to documentation.
When to use this code
Use I30.1 when the provider documents infective pericarditis, including cases linked to a known infection or infectious organism. Code it only when the record supports an infectious cause rather than a nonspecific or postprocedural inflammatory process. If the cause is unclear, check documentation.
Do not use for
Do not use this code for pericarditis that is not documented as infectious, or for other pericardial disorders such as effusion alone. If the note describes a different etiology, code that condition instead.
Coding tip
Confirm the provider explicitly links the pericarditis to infection before assigning I30.1.