Aqueous misdirection, right eye

This code describes aqueous misdirection syndrome, also known as malignant glaucoma or ciliary block glaucoma, affecting the right eye. It is a rare form of secondary angle-closure glaucoma where aqueous humor is misdirected into the vitreous cavity, causing anterior displacement of the iris and lens, leading to elevated intraocular pressure.

Use this code when documentation clearly indicates aqueous misdirection syndrome is present in the patient's right eye. Supporting documentation should detail the clinical findings consistent with this condition, such as shallow anterior chamber, elevated intraocular pressure, and lack of pupillary block.

• Ensure laterality is accurately documented and coded; separate codes exist for the left eye and bilateral involvement.
• Do not confuse with primary angle-closure glaucoma; aqueous misdirection has a distinct pathophysiology.
• Look for documentation of previous ocular surgery, especially for glaucoma or cataract, as this is a common predisposing factor.