Get started free

H40

Non-billable

Glaucoma

H40 is the ICD-10-CM code for Glaucoma. It is a non-billable category code — use a more specific child code such as H40.0 for billing.

Status
Header (non-billable)
Chapter
H00-H59
Subcodes
9
Edition
FY2026

H00-H59 Diseases of the eye and adnexa

Excludes1 — not coded here

  • •absolute glaucoma (H44.51-)
  • •congenital glaucoma (Q15.0)
  • •traumatic glaucoma due to birth injury (P15.3)

Frequently asked questions

What is ICD-10 code H40?
H40 is the ICD-10-CM code for "Glaucoma". It falls under H00-H59 Diseases of the eye and adnexa.
Is H40 a billable code?
No — H40 is a non-billable header code. Use a more specific child code (such as H40.0) for billing.
What are the subcodes of H40?
H40 has 9 more specific child codes, including H40.0, H40.1, H40.2.
What is excluded from H40?
Excludes1 (not coded here): absolute glaucoma (H44.51-); congenital glaucoma (Q15.0); traumatic glaucoma due to birth injury (P15.3).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.

Get started freeSee how Eleplan works →