ICD-10-CM › H00-H59 › H40-H42 › H40 Glaucoma › H40.9
H40.9
Unspecified glaucoma
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
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 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
Codes in the same group
| Code | Description | Status |
|---|---|---|
| H40.0 | Glaucoma suspect | Not billable |
| H40.1 | Open-angle glaucoma | Not billable |
| H40.2 | Primary angle-closure glaucoma | Not billable |
| H40.3 | Glaucoma secondary to eye trauma | Not billable |
| H40.4 | Glaucoma secondary to eye inflammation | Not billable |
| H40.5 | Glaucoma secondary to other eye disorders | Not billable |
| H40.6 | Glaucoma secondary to drugs | Not billable |
| H40.8 | Other glaucoma | Not billable |