C30.1 is the authoritative medical code for Malignant neoplasm of middle ear. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of middle ear (ICD-10-CM C30.1), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Malignant neoplasm of middle ear is a billable ICD-10-CM diagnosis code C30.1. Includes: malignant neoplasm of middle ear. Inclusion terms: Malignant neoplasm of antrum tympanicum; Malignant neoplasm of auditory tube; Malignant neoplasm of eustachian tube; Malignant neoplasm of inner ear; Malignant neoplasm of mastoid air cells; Malignant neoplasm of tympanic cavity. Excludes1 (not coded here): malignant neoplasm of auricular canal external (C43.2-,C44.2-); malignant neoplasm of bone of ear meatus C41.0; malignant neoplasm of cartilage of ear C49.0; malignant melanoma of skin of external ear C43.2-; other and unspecified malignant neoplasm of skin of external ear C44.2-; mesothelioma C45.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C30.1 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- malignant neoplasm of middle ear
Inclusion Terms
Alternative terms the tabular list files under this code.
- Malignant neoplasm of antrum tympanicum
- Malignant neoplasm of auditory tube
- Malignant neoplasm of eustachian tube
- Malignant neoplasm of inner ear
- Malignant neoplasm of mastoid air cells
- Malignant neoplasm of tympanic cavity
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- malignant neoplasm of auricular canal external (C43.2-,C44.2-)
- malignant neoplasm of bone of ear meatus C41.0
- malignant neoplasm of cartilage of ear C49.0
- malignant melanoma of skin of external ear C43.2-
- other and unspecified malignant neoplasm of skin of external ear C44.2-
- mesothelioma C45.-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with C30.1?
Per official ICD-10-CM Excludes1 instructions, C30.1 must not be reported together with: malignant neoplasm of auricular canal (external) (C43.2-,C44.2-); malignant neoplasm of bone of ear (meatus) (C41.0); malignant neoplasm of cartilage of ear (C49.0); malignant melanoma of skin of (external) ear (C43.2-).
What conditions are included under C30.1?
Malignant neoplasm of middle ear includes: Malignant neoplasm of antrum tympanicum; Malignant neoplasm of auditory tube; Malignant neoplasm of eustachian tube; Malignant neoplasm of inner ear; Malignant neoplasm of mastoid air cells.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to C30.1 in its code family, with their registry titles.
- C30 — Malignant neoplasm of nasal cavity and middle ear
- C30.0 — Malignant neoplasm of nasal cavity
Neoplasm Table Sites (10)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, antrum (Highmore) (maxillary), tympanicum — Malignant, Primary
- Neoplasm, neoplastic, auditory, canal (external) (skin), internal — Malignant, Primary
- Neoplasm, neoplastic, auditory, tube — Malignant, Primary
- Neoplasm, neoplastic, auricular canal (external), internal — Malignant, Primary
- Neoplasm, neoplastic, cavity, tympanic — Malignant, Primary
- Neoplasm, neoplastic, ear (external), inner — Malignant, Primary
- Neoplasm, neoplastic, ear (external), middle — Malignant, Primary
- Neoplasm, neoplastic, eustachian tube — Malignant, Primary
- Neoplasm, neoplastic, mastoid (air cells) (antrum) (cavity) — Malignant, Primary
- Neoplasm, neoplastic, tympanic cavity — Malignant, Primary