ICD-10-CM 2027
ICD-10 code for malignant ameloblastoma
From the official ICD-10-CM alphabetic index entry “Ameloblastoma › malignant”. Page updated September 29, 2026.
About coding malignant ameloblastoma
The ICD-10-CM code for malignant ameloblastoma is C41.1 (Malignant neoplasm of mandible). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on C41.1.
Within C41 (malignant neoplasm of bone and articular cartilage of other and unspecified sites), C41.1 is specifically for malignant neoplasm of mandible. Related codes cover bones of skull and face (C41.0), vertebral column (C41.2), ribs, sternum and clavicle (C41.3), pelvic bones, sacrum and coccyx (C41.4) and bone and articular cartilage, unspecified (C41.9).
The conditions in its Excludes2 note aren't part of C41.1, but may be coded alongside it if the patient has both: jaw NOS (C03.9), lower (C03.1) and malignant neoplasm of upper jaw bone (C41.0).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific malignant ameloblastoma codes (official index)
Common questions about malignant ameloblastoma ICD-10 codes
What is the ICD-10 code for malignant ameloblastoma?
- C41.1 — Malignant neoplasm of mandible. More specific codes apply when the documentation supports them: C41.1, C41.0.
What is the ICD-10 code for jaw malignant ameloblastoma?
- C41.1 — Malignant neoplasm of mandible.
Is C41.1 billable?
- Yes. C41.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can C41.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict C41.1 as a principal diagnosis.
Is C41.1 a CC or MCC?
- C41.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.