H40.6
ICD-10Non-billable categoryGlaucoma secondary to drugs
Official ICD-10-CM descriptor (FY2026)
Glaucoma secondary to drugs
H40.6 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.
Use additional code
Report an additional code to identify the associated condition.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
7th character
- One of the following 7th characters is to be assigned to each code in subcategory H40.6 to designate the stage of glaucoma
Permitted 7th characters
| 0 | stage unspecified |
| 1 | mild stage |
| 2 | moderate stage |
| 3 | severe stage |
| 4 | indeterminate stage |
ICD-10-CM FY2026 defines 4 codes beneath H40.6. See the ICD-10-CM index for what this site publishes.
Related codes in H40
- H40.0Glaucoma suspectcategory
- H40.1Open-angle glaucomacategory
- H40.2Primary angle-closure glaucomacategory
- H40.3Glaucoma secondary to eye traumacategory
- H40.4Glaucoma secondary to eye inflammationcategory
- H40.5Glaucoma secondary to other eye disorderscategory
- 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.