H40.2
ICD-10Non-billable categoryPrimary angle-closure glaucoma
Official ICD-10-CM descriptor (FY2026)
Primary angle-closure glaucoma
H40.2 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- aqueous misdirection (H40.83-)
- malignant glaucoma (H40.83-)
ICD-10-CM FY2026 defines 5 codes beneath H40.2. See the ICD-10-CM index for what this site publishes.
Related codes in H40
- H40.0Glaucoma suspectcategory
- H40.1Open-angle glaucomacategory
- H40.3Glaucoma secondary to eye traumacategory
- H40.4Glaucoma secondary to eye inflammationcategory
- H40.5Glaucoma secondary to other eye disorderscategory
- H40.6Glaucoma secondary to drugscategory
- H40.8Other glaucomacategory
- H40.9Unspecified glaucoma
Where this code sits
- Block
- Glaucoma (H40-H42)
- Parent code
- H40
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.