C38.0 Malignant neoplasm of heart

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Malignant neoplasm of pericardium

Excludes1 (never code together)

• malignant neoplasm of great vessels (C49.3)

Applies from C38 Malignant neoplasm of heart, mediastinum and pleura

Excludes1 (never code together)

• mesothelioma (C45.-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 20 — Lung and Other Severe Cancers
• CMS-HCC V22: HCC 11 — Colorectal, Bladder, and Other Cancers
• RxHCC V08: HCC 20 — Lung, Kidney, and Other Cancers; Secondary Cancer of Lymph Nodes and Other Sites
• ESRD V24: HCC 11

MS-DRG index

Defines the logic of DRG(s) 314-316 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 164.1 Malignant neoplasm of heart (approximate)

Code annotations containing back-references to C38.0

Back-references to C38.0

• Type 1 Excludes: C45.2 Mesothelioma of pericardium ("other malignant neoplasm of pericardium (C38.0)")
• Type 2 Excludes: C49 Malignant neoplasm of other connective and soft tissue ("malignant neoplasm of heart (C38.0)")
• Type 1 Excludes: C49.3 Malignant neoplasm of connective and soft tissue of thorax ("malignant neoplasm of heart (C38.0)")

Nearby codes

• C38 Malignant neoplasm of heart, mediastinum and pleura
• C38.0 Malignant neoplasm of heart (this code)
• C38.1 Malignant neoplasm of anterior mediastinum
• C38.2 Malignant neoplasm of posterior mediastinum
• C38.3 Malignant neoplasm of mediastinum, part unspecified
• C38.4 Malignant neoplasm of pleura
• C38.8 Malignant neoplasm of overlapping sites of heart, mediastinum and pleura