Degeneration of chamber angle, bilateral

This code signifies a degenerative process affecting the chamber angle structures in both eyes. This deterioration can impact the outflow of aqueous humor, potentially leading to elevated intraocular pressure or other ocular complications. It describes a bilateral condition where the anatomical integrity of the angle is compromised due to age-related changes, disease, or other factors.

Use this code when documentation explicitly states degeneration of the chamber angle affecting both the right and left eyes. This diagnosis is typically made during an ophthalmic examination, often involving gonioscopy, which reveals structural changes in the angle. Supporting documentation should clearly indicate the bilateral nature of the degeneration.

• Ensure documentation specifies "bilateral" involvement; otherwise, use the appropriate unilateral codes (H21.211 or H21.212).
• Do not confuse this with congenital anomalies of the chamber angle (Q13.1) or other specific angle disorders like angle-closure glaucoma (H40.2-).
• If glaucoma is present and directly attributed to the chamber angle degeneration, sequence the glaucoma code first, followed by this code as a secondary diagnosis.