ICD-10 Code D86.85 – Sarcoid myocarditis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D86.85 – Sarcoid myocarditis
What it is
D86.85 identifies myocarditis caused by sarcoidosis. Use it when the heart muscle is involved as part of systemic granulomatous disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include arrhythmias, conduction abnormalities, chest pain, heart failure symptoms, or imaging and biopsy evidence of cardiac sarcoid involvement.
When to use this code
Use this code when the provider documents sarcoid myocarditis, cardiac sarcoidosis with myocardial involvement, or myocarditis attributed to sarcoidosis. It supports coding of the heart manifestation, not just systemic sarcoidosis.
If the record only states sarcoidosis without cardiac involvement, do not assign this code. Check documentation for the exact site and provider linkage between sarcoidosis and myocarditis.
Do not use for
Do not use for nonspecific myocarditis without sarcoidosis, or for sarcoidosis involving other organs only. Check documentation if the cardiac diagnosis is uncertain.
Coding tip
Verify that the provider explicitly links myocarditis to sarcoidosis before assigning D86.85.