Malignant neoplasm of nasal cavity and middle ear (C30) ICD-10-CM
The C30 code range covers malignant neoplasm of nasal cavity and middle ear with 3 ICD-10-CM diagnosis codes. 2 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the C30 Range 3 codes · 2 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C30 range.
Eustachian Tube
A narrow passageway that connects the upper part of the throat to the TYMPANIC CAVITY.
About the C30 Code Range
ICD-10 code C30 is used specifically for identifying and classifying malignant tumors found in the nasal cavity and middle ear.
This section includes two primary codes: C30.0 for malignant neoplasm of the nasal cavity, and C30.1 for malignant neoplasm of the middle ear. The nasal cavity code (C30.0) covers various types of cancers such as squamous cell carcinoma, olfactory neuroblastoma, and malignant melanoma affecting areas including the nasal septum, conchae, vestibule, and paranasal sinuses. Synonyms like "primary malignant olfactory neuroblastoma" or "carcinoma of nasal cavity" help clarify that these terms correspond to code C30.0 in medical records and billing. Similarly, C30.1 addresses malignant tumors in the middle ear and related structures including the Eustachian tube, mastoid air cells, and tympanic cavity. This code encompasses tumors referred to as "primary malignant middle ear paraganglioma" or "malignant tumor of tympanic cavity," linking these terms directly to the proper ICD-10 classification. Together, these codes assist healthcare professionals and coders in accurately documenting and managing head and neck cancers located in these specific anatomical areas.
Questions About This Page
How many billable codes are in the C30 range?
Of the 3 codes in this range, 2 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the C30 range classify?
The range classifies malignant neoplasm of nasal cavity and middle ear. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
