C26.1 Malignant neoplasm of spleen

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• Hodgkin lymphoma (C81.-)
• non-Hodgkin lymphoma (C82-C85)

Applies from C26 Malignant neoplasm of other and ill-defined digestive organs

Excludes1 (never code together)

• malignant neoplasm of peritoneum and retroperitoneum (C48.-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 22 — Bladder, Colorectal, and Other Cancers
• CMS-HCC V22: HCC 11 — Colorectal, Bladder, and Other Cancers
• ESRD V24: HCC 11

MS-DRG index

Defines the logic of DRG(s) 820-822 in MDC 17.

Approximate ICD-9-CM (GEMs)

• 159.1 Malignant neoplasm of spleen, not elsewhere classified

Nearby codes

• C26 Malignant neoplasm of other and ill-defined digestive organs
• C26.0 Malignant neoplasm of intestinal tract, part unspecified
• C26.1 Malignant neoplasm of spleen (this code)
• C26.9 Malignant neoplasm of ill-defined sites within the digestive system