H42Billable
Glaucoma in diseases classified elsewhere
- Chapter
- 7. Diseases of the eye and adnexa
- Category
- H42
- Effective date
- October 1, 2026
Frequently asked questions
What is ICD-10 code H42?
H42 is an ICD-10-CM diagnosis code for Glaucoma in diseases classified elsewhere.
Is H42 a billable code?
Yes. H42 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is H42 in?
H42 falls under Chapter 7: Diseases of the eye and adnexa.
When did H42 become effective?
H42 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.