C05.9 Malignant neoplasm of palate, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Malignant neoplasm of roof of mouth

Applies from C05 Malignant neoplasm of palate

Excludes1 (never code together)

• Kaposi's sarcoma of palate (C46.2)

Use additional code

• code to identify:
• alcohol abuse and dependence (F10.-)
• history of tobacco dependence (Z87.891)
• tobacco dependence (F17.-)
• tobacco use (Z72.0)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 21 — Lymphoma and Other Cancers
• CMS-HCC V22: HCC 11 — Colorectal, Bladder, and Other Cancers
• RxHCC V08: HCC 22 — Prostate, Breast, Bladder, and Other Cancers and Tumors
• ESRD V24: HCC 11

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Approximate ICD-9-CM (GEMs)

• 145.5 Malignant neoplasm of palate, unspecified (approximate)

Nearby codes

• C05 Malignant neoplasm of palate
• C05.0 Malignant neoplasm of hard palate
• C05.1 Malignant neoplasm of soft palate
• C05.2 Malignant neoplasm of uvula
• C05.8 Malignant neoplasm of overlapping sites of palate
• C05.9 Malignant neoplasm of palate, unspecified (this code)