ICD-10-CM Alphabetic Index · FY 2027 11 Entries
Otosclerosis in the ICD-10-CM Index ICD-10-CM
The main term Otosclerosis (general) carries 11 index entries pointing to 5 ICD-10-CM codes. The default entry is H80.9, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2027 index fileEffective Oct 1, 2026 – Sep 30, 2027
11
Index Entries
5
Codes Referenced
H80.9
Default Code
O
Letter
11 of 11 shown
ICD-10-CM
Index Entries Under Otosclerosis 11 entries · 5 codes
Otosclerosis (general) H80.9 Non-billable
cochlear (endosteal) H80.2 Non-billable
involving
otic capsule see Otosclerosis, cochlear
oval window
nonobliterative H80.0 Non-billable
obliterative H80.1 Non-billable
round window see Otosclerosis, cochlear
nonobliterative see Otosclerosis, involving, oval window, nonobliterative
obliterative see Otosclerosis, involving, oval window, obliterative
specified NEC H80.8 Non-billable
The info icon previews the code's description and billable status; the code link opens its full page with all notations.
Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2027 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2026 through September 30, 2027.
