ICD-10 Code I32 – Pericarditis in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I32 – Pericarditis in diseases classified elsewhere
What it is
I32 identifies pericarditis that is caused by another documented condition rather than a primary pericardial disorder. Use it when the underlying disease is known and the record links the pericardial inflammation to that condition.
Clinical signs
Clinical features vary; refer to documentation. Common findings in pericarditis include chest pain, a pericardial friction rub, and ECG or imaging evidence of pericardial inflammation or effusion.
When to use this code
Use I32 when the provider documents pericarditis as secondary to another disease, such as a systemic or infectious condition. You should also code the underlying cause when it is documented and supported in the record. Check documentation if the etiology is unclear.
Do not use for
Do not use I32 for idiopathic, acute, chronic, or recurrent pericarditis when a more specific code applies. Do not assign it if the chart does not clearly state that the pericarditis is due to another disease.
Coding tip
Always look for the linked underlying condition first, because I32 is an “in diseases classified elsewhere” code and usually requires additional coding.