C14.2 Malignant neoplasm of Waldeyer's ring

Billable ICD-10-CM code, FY2026.

Applies from C14 Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx

Excludes1 (never code together)

• malignant neoplasm of oral cavity NOS (C06.9)

Use additional code

• code to identify:
• alcohol abuse and dependence (F10.-)
• exposure to environmental tobacco smoke (Z77.22)
• exposure to tobacco smoke in the perinatal period (P96.81)
• history of tobacco dependence (Z87.891)
• occupational exposure to environmental tobacco smoke (Z57.31)
• 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
• ESRD V24: HCC 11

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 149.1 Malignant neoplasm of waldeyer's ring

Nearby codes

• C14 Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx
• C14.0 Malignant neoplasm of pharynx, unspecified
• C14.2 Malignant neoplasm of Waldeyer's ring (this code)
• C14.8 Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx