ICD10Check
CheckerBrowseOpen

H40

⚠ Non-billable (Header)

Glaucoma

Diseases of the eye and adnexa (H00-H59)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code

❌ Excludes1

direct

Cannot be coded with H40

  • • absolute glaucoma (H44.51-)
  • • congenital glaucoma (Q15.0)
  • • traumatic glaucoma due to birth injury (P15.3)

Child Codes (9)

H40.0Glaucoma suspectH40.1Open-angle glaucomaH40.2Primary angle-closure glaucomaH40.3Glaucoma secondary to eye traumaH40.4Glaucoma secondary to eye inflammationH40.5Glaucoma secondary to other eye disordersH40.6Glaucoma secondary to drugsH40.8Other glaucomaH40.9Unspecified glaucoma

🧪 Validate Combinations

Add H40 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeH40
BillableNo — Header code
CategoryDiseases of the eye and adnexa (H00-H59)
Excludes13 rule(s)
Excludes20 note(s)
Child codes9

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)