Unspecified primary 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, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 5 more specific codes instead:

H40.20X0 Unspecified primary angle-closure glaucoma, stage unspecified
H40.20X1 Unspecified primary angle-closure glaucoma, mild stage
H40.20X2 Unspecified primary angle-closure glaucoma, moderate stage
H40.20X3 Unspecified primary angle-closure glaucoma, severe stage
H40.20X4 Unspecified primary angle-closure glaucoma, indeterminate stage

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2007 Added to the draft code set draft Unspecified primary angle-closure glaucoma
FY2012 Removed from the draft draft
FY2014 Returned to the draft draft

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 > angle-closure

Codes in the same group

Code	Description	Status
H40.21	Acute angle-closure glaucoma	Not billable
H40.22	Chronic angle-closure glaucoma	Not billable
H40.23	Intermittent angle-closure glaucoma	Not billable
H40.24	Residual stage of angle-closure glaucoma	Not billable