Neovascular secondary angle closure glaucoma, left eye

This code signifies a specific type of secondary angle-closure glaucoma affecting the left eye, characterized by the formation of new, abnormal blood vessels (neovascularization) in the anterior chamber angle. This neovascularization obstructs the aqueous humor outflow, leading to increased intraocular pressure and optic nerve damage. It is a severe form of glaucoma often associated with underlying conditions like diabetic retinopathy or central retinal vein occlusion.

Use this code when documentation clearly indicates neovascular secondary angle-closure glaucoma is present in the patient's left eye. This diagnosis is typically made following gonioscopy revealing neovascularization of the iris and/or angle, elevated intraocular pressure, and evidence of glaucomatous optic neuropathy. Supporting documentation should include ophthalmological examination findings, visual field tests, and imaging results.

• Always specify laterality; this code is for the left eye only.
• Code the underlying cause of the neovascularization (e.g., diabetic retinopathy, central retinal vein occlusion) first, as this is a secondary glaucoma.
• Ensure documentation differentiates between primary and secondary angle-closure glaucoma, and specifically mentions neovascularization.