H40.9
Unspecified glaucoma
Diseases of the eye and adnexa Billable
Quick Reference
Elevated intraocular pressure or glaucomatous optic nerve damage without specification of type
Clinical Information
When to Use This Code
Elevated intraocular pressure or glaucomatous optic nerve damage without specification of type
Common Clinical Scenarios
- Glaucoma suspect
- Glaucoma management
- IOP-lowering eye drops
- Ophthalmology referral for glaucoma
Documentation Requirements
- Document IOP measurements
- Record optic nerve findings (cup-to-disc ratio)
- Note visual field testing results if performed
- Specify medications (prostaglandin analogs, beta blockers)
Coding Guidelines
Inclusion Terms
These terms are included in this code:
Glaucoma NOSElevated IOP
Exclusion Terms
Do NOT use this code for:
- Primary open-angle glaucoma (H40.11-)
- Angle-closure glaucoma (H40.20-)
- Ocular hypertension without glaucoma (H40.05-)
Coding Notes
Leading cause of irreversible blindness
Use specific codes when type determined
Regular monitoring essential
Related ICD-10 Codes
Consider these related codes based on patient presentation:
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Code
H40.9
Category
Diseases of the eye and adnexa
Billable Status
Billable
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