Hypotony of right eye due to ocular fistula

This code signifies a condition where the intraocular pressure (IOP) in the right eye is abnormally low, specifically caused by an ocular fistula. An ocular fistula is an abnormal communication or tract that allows aqueous humor to leak from the eye, leading to hypotony.

Apply this code when documentation clearly indicates hypotony of the right eye and explicitly states that an ocular fistula is the underlying cause. This may be seen in post-surgical complications (e.g., trabeculectomy), trauma, or spontaneous fistulas. Documentation should specify the affected eye and the etiology.

• Ensure the documentation specifies the right eye (laterality) for hypotony.
• Verify that an ocular fistula is explicitly identified as the cause of the hypotony, not other etiologies like ciliary body detachment.
• Consider sequencing this code after any underlying condition or procedure that led to the fistula, if applicable.