ICD-10 Code for Cogan's Syndrome
The default ICD-10-CM 2027 code for cogan's syndrome is H16.32 – Diffuse interstitial keratitis (a header – choose a more specific code). More specific codes depend on the details documented, as listed in the official index (2 codes, 1 billable).
- Main code
H16.32– Diffuse interstitial keratitis- Billable
- No – header code
Index entries for Cogan's syndrome
- oculomotor apraxia –
H51.8
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.