ICD-10 Code H40.841 – Neovascular secondary angle closure glaucoma, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.841 – Neovascular secondary angle closure glaucoma, right eye
What it is
This code identifies neovascular secondary angle closure glaucoma affecting the right eye. It means abnormal new blood vessels have led to blockage of aqueous outflow and increased eye pressure.
Clinical signs
Typical findings include iris or angle neovascularization, elevated intraocular pressure, and a narrowed or closed anterior chamber angle. Vision loss, eye pain, redness, or photophobia may be present; clinical features vary, so refer to documentation.
When to use this code
Use this code when the record clearly states neovascular secondary angle closure glaucoma in the right eye. Code it from ophthalmology documentation that links the glaucoma to neovascularization and specifies laterality. If the eye or mechanism is not documented, check documentation before assigning the code.
Do not use for
Do not use this code for glaucoma without neovascularization or for secondary glaucoma in another eye. It is also incorrect when the note does not specify angle closure or right-eye involvement.
Coding tip
Always verify both the neovascular cause and the right-eye laterality in the provider’s note before coding.