Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for simplex glaucoma

H40.11

Primary open-angle glaucoma

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Glaucoma › simplex”. Page updated September 29, 2026.

About coding simplex glaucoma

The ICD-10-CM code for simplex glaucoma is H40.11 (Primary open-angle glaucoma).

Within H40.1 (open-angle glaucoma), H40.11 is specifically for primary open-angle glaucoma. Related codes cover unspecified open-angle glaucoma (H40.10), Low-tension glaucoma (H40.12), pigmentary glaucoma (H40.13), capsular glaucoma with pseudoexfoliation of lens (H40.14) and residual stage of open-angle glaucoma (H40.15).

Codes in this range require a 7th character: 0 for stage unspecified, 1 for mild stage, 2 for moderate stage, 3 for severe stage and 4 for indeterminate stage. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about simplex glaucoma ICD-10 codes

What is the ICD-10 code for simplex glaucoma?

H40.11 — Primary open-angle glaucoma (a header code; report a more specific subcode).

Is H40.11 billable?

No. H40.11 is a header code. Report one of its more specific subcodes instead.