H40Glaucoma
ICD-10-CM category (non-billable header) code — part of Glaucoma (H40-H42)
Coding Notes
Excludes1 (never code both together)
- absolute glaucoma (H44.51-)
- congenital glaucoma (Q15.0)
- traumatic glaucoma due to birth injury (P15.3)
Subcategories (9)
- H40.0 Glaucoma suspect
- H40.1 Open-angle glaucoma
- H40.2 Primary angle-closure glaucoma
- H40.3 Glaucoma secondary to eye trauma
- H40.4 Glaucoma secondary to eye inflammation
- H40.5 Glaucoma secondary to other eye disorders
- H40.6 Glaucoma secondary to drugs
- H40.8 Other glaucoma
- H40.9 Unspecified glaucoma