C01 Malignant neoplasm of base of tongue

Billable ICD-10-CM code, FY2026.

Applicable to

• Malignant neoplasm of dorsal surface of base of tongue
• Malignant neoplasm of fixed part of tongue NOS
• Malignant neoplasm of posterior third of tongue

Use additional code

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

Applies from C01 Malignant neoplasm of base of tongue

Applicable to

• Malignant neoplasm of dorsal surface of base of tongue
• Malignant neoplasm of fixed part of tongue NOS
• Malignant neoplasm of posterior third of tongue

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)

• 141.0 Malignant neoplasm of base of tongue

Code annotations containing back-references to C01

Back-references to C01

• Type 2 Excludes: C02.0 Malignant neoplasm of dorsal surface of tongue ("malignant neoplasm of dorsal surface of base of tongue (C01)")

Back-references to C01

• Type 2 Excludes: C02.0 Malignant neoplasm of dorsal surface of tongue ("malignant neoplasm of dorsal surface of base of tongue (C01)")

Nearby codes

• C01 Malignant neoplasm of base of tongue (this code)