ICD-10 Code D15.1 – Benign neoplasm of heart (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D15.1 – Benign neoplasm of heart
What it is
D15.1 identifies a noncancerous tumor arising in the heart. Use it when documentation states a benign cardiac neoplasm, including a mass described as benign and located in cardiac tissue.
Clinical signs
Clinical features vary; refer to documentation. Heart masses may be found on imaging or during evaluation for murmur, arrhythmia, embolic events, or obstructive symptoms, but the record must support a benign cardiac tumor.
When to use this code
Use D15.1 when the provider documents a benign neoplasm of the heart, primary or unspecified, and no malignant behavior is reported. It may also fit after pathology or imaging confirms a benign cardiac tumor. If the site is unclear or the record only says “cardiac mass,” check documentation.
Do not use for
Do not use this code for malignant heart tumors or for metastases to the heart. Also avoid it when the finding is a thrombus, vegetation, or other non-neoplastic cardiac lesion.
Coding tip
Code the neoplasm only when the chart clearly documents benign cardiac tumor behavior and location; otherwise, query for clarification.