ICD-10-CM 2027
ICD-10 code for Keratoconus
From the official ICD-10-CM alphabetic index entry “Keratoconus”. Page updated September 29, 2026.
About coding Keratoconus
The ICD-10-CM code for Keratoconus is H18.60 (Keratoconus, unspecified). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H18.60.
Within H18.6, choose H18.60 (unspecified) only when documentation doesn't support a more specific option: stable (H18.61) and unstable (H18.62).
To report this condition, pick the subcode that matches the documentation: H18.601 (right eye), H18.602 (left eye), H18.603 (bilateral) and H18.609 (unspecified eye).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific Keratoconus codes (official index)
Common questions about Keratoconus ICD-10 codes
What is the ICD-10 code for Keratoconus?
- H18.60 — Keratoconus, unspecified (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: Q13.4, H18.61, H18.62.
What is the ICD-10 code for congenital keratoconus?
- Q13.4 — Other congenital corneal malformations.
What is the ICD-10 code for stable keratoconus?
- H18.61 — Keratoconus, stable (header code; choose a more specific subcode).
What is the ICD-10 code for unstable keratoconus?
- H18.62 — Keratoconus, unstable (header code; choose a more specific subcode).
Is H18.60 billable?
- No. H18.60 is a header code. Report one of its more specific subcodes instead.