Glaucoma secondary to oth eye disord, unsp eye, severe stage

This code signifies a severe form of glaucoma that has developed as a consequence of another pre-existing ocular condition, affecting an unspecified eye. The elevated intraocular pressure and subsequent optic nerve damage are directly attributable to a primary eye disorder, rather than being primary open-angle or angle-closure glaucoma.

Apply this code when documentation clearly indicates severe glaucoma secondary to an identified eye disorder (e.g., uveitis, intraocular hemorrhage, retinal detachment) but the specific eye affected is not documented. The physician's notes must explicitly state the severity as "severe stage" or equivalent clinical findings supporting this classification.

• Ensure the underlying eye disorder causing the secondary glaucoma is also coded.
• Do not use if the specific eye (right or left) is documented; instead, use the appropriate laterality code.
• Confirm the "severe stage" is explicitly documented or clearly inferred from clinical findings like extensive visual field loss or advanced optic nerve damage.