ICD-10 Code for Otosclerosis
The default ICD-10-CM 2027 code for otosclerosis (general) is H80.9 – Unspecified otosclerosis (a header – choose a more specific code). More specific codes depend on the details documented, as listed in the official index (5 codes, 0 billable).
- Main code
H80.9– Unspecified otosclerosis- Billable
- No – header code
Index entries for Otosclerosis
- cochlear (endosteal) –
H80.2-(header) - involving
- otic capsule – see Otosclerosis, cochlear
- oval window
- round window – see Otosclerosis, cochlear
- nonobliterative – see Otosclerosis, involving, oval window, nonobliterative
- obliterative – see Otosclerosis, involving, oval window, obliterative
- specified NEC –
H80.8-(header)
How to choose the right code
Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.
Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.