C30.1 — Malignant neoplasm of middle ear
Is C30.1 billable?
Yes — C30.1 is billable for FY2027. C30.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C30.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.
C30.1 at a glance
| Code | C30.1 |
|---|---|
| Description | Malignant neoplasm of middle ear |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C30.1 group to?
C30.1 sits in MDC Pre and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCCsurgical
- 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CCsurgical
- 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCCsurgical
Excludes1 — never code together
The conditions below can never be reported together with C30.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Inclusion terms
Alternative wording in documentation that is classified to C30.1.
- 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 — never code together — inherited from C30-C39
The conditions below can never be reported together with C30.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- mesothelioma (C45.-)
How long has C30.1 existed?
C30.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with C30.1?
ICD-10-CM declares these codes mutually exclusive with C30.1 — exactly one of each pair can be correct for a given encounter.