Glaucoma with increased episcleral venous pressure, left eye

This diagnosis code signifies a specific type of glaucoma affecting the left eye, characterized by elevated pressure within the episcleral veins. This increased venous pressure impedes aqueous humor outflow, leading to elevated intraocular pressure and potential optic nerve damage. It is a secondary form of glaucoma, distinct from primary open-angle or angle-closure types.

Assign this code when documentation explicitly states glaucoma in the left eye is due to or associated with increased episcleral venous pressure. This condition may arise from various underlying causes, such as carotid-cavernous fistula, orbital tumors, or superior vena cava syndrome. Supporting documentation should include ophthalmological examination findings confirming glaucoma and a clear indication of elevated episcleral venous pressure.

• Ensure the documentation specifies "left eye" to accurately assign this laterality-specific code.
• Do not confuse this with other secondary glaucomas; the etiology must be clearly linked to increased episcleral venous pressure.
• Code any underlying systemic condition causing the increased episcleral venous pressure as a primary diagnosis, if applicable, following sequencing guidelines.