ICD-10-CM > C00-D49 > C30-C39 > C38 C38 Malignant neoplasm of heart, mediastinum and pleura Non-Billable/Non-Specific Type 1 Excludes mesothelioma (C45.-) Codes C38.0Malignant neoplasm of heartC38.1Malignant neoplasm of anterior mediastinumC38.2Malignant neoplasm of posterior mediastinumC38.3Malignant neoplasm of mediastinum, part unspecifiedC38.4Malignant neoplasm of pleuraC38.8Malignant neoplasm of overlapping sites of heart, mediastinum and pleura