ICD-10-CM 2027
ICD-10 code for branchial or branchiogenic carcinoma
From the official ICD-10-CM alphabetic index entry “Carcinoma (malignant) › branchial or branchiogenic”. Page updated September 29, 2026.
About coding branchial or branchiogenic carcinoma
The ICD-10-CM code for branchial or branchiogenic carcinoma is C10.4 (Malignant neoplasm of branchial cleft).
Within C10 (malignant neoplasm of oropharynx), C10.4 is specifically for malignant neoplasm of branchial cleft. Related codes cover vallecula (C10.0), anterior surface of epiglottis (C10.1), lateral wall of oropharynx (C10.2), posterior wall of oropharynx (C10.3), overlapping sites of oropharynx (C10.8) and unspecified (C10.9).
Use an additional 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) and 2 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about branchial or branchiogenic carcinoma ICD-10 codes
What is the ICD-10 code for branchial or branchiogenic carcinoma?
- C10.4 — Malignant neoplasm of branchial cleft.
Is C10.4 billable?
- Yes. C10.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can C10.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict C10.4 as a principal diagnosis.
Is C10.4 a CC or MCC?
- No. C10.4 is neither a CC nor an MCC under MS-DRG v44.0.