Neoplasm Table
mastoid (air cells) (antrum) (cavity)
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.
Frequently asked questions
What are the ICD-10-CM neoplasm codes for mastoid?
Per the ICD-10-CM Neoplasm Table: malignant primary C30.1; malignant secondary C78.39; ca in situ D02.3; benign D14.0; uncertain behavior D38.5; unspecified behavior D49.1. Always confirm the code, and add the required 7th character where applicable, in the Tabular List.
ICD-10-CM Neoplasm Table maintained by CDC/NCHS (public domain), from the CMS FY2027 release.