Neovascular secondary angle closure glaucoma

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2026 onwards. It has never been valid for submission on its own.

Submit one of these 4 more specific codes instead:

H40.841 Neovascular secondary angle closure glaucoma, right eye
H40.842 Neovascular secondary angle closure glaucoma, left eye
H40.843 Neovascular secondary angle closure glaucoma, bilateral
H40.849 Neovascular secondary angle closure glaucoma, unspecified eye

What has happened to this code

Every change the publisher made, from 2026 to now.

FY2026 Added to the code set Neovascular secondary angle closure glaucoma

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from H40 Glaucoma

Excludes1 - never coded here

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Glaucoma > obstructive
Glaucoma > closed angle
Glaucoma > narrow angle
Glaucoma > neovascular secondary angle closure
Glaucoma > angle-closure > secondary, neovascular

Codes in the same group

Code	Description	Status
H40.81	Glaucoma with increased episcleral venous pressure	Not billable
H40.82	Hypersecretion glaucoma	Not billable
H40.83	Aqueous misdirection	Not billable
H40.89	Other specified glaucoma	Valid