Aqueous misdirection, left eye

This code signifies aqueous misdirection, also known as malignant glaucoma or ciliary block glaucoma, affecting the left eye. It is a rare but severe form of secondary angle-closure glaucoma characterized by misdirection of aqueous humor into the vitreous cavity, leading to anterior displacement of the iris and lens, and subsequent elevation of intraocular pressure.

Use this code when documentation confirms aqueous misdirection specifically impacting the left eye. This diagnosis is typically made after ruling out other causes of angle-closure glaucoma and often follows intraocular surgery, particularly for glaucoma or cataract. Supporting documentation should include clinical findings such as shallow anterior chamber, elevated intraocular pressure, and often a history of recent ocular surgery.

• Ensure laterality is precisely documented; this code is specific to the left eye.
• Distinguish from other forms of secondary glaucoma, especially those with pupillary block or peripheral anterior synechiae.
• Consider sequencing this code as a primary diagnosis if it is the main reason for the encounter, or as a secondary diagnosis if it complicates another condition.