Residual stage of angle-closure glaucoma, unspecified eye

This code signifies the permanent damage or sequelae resulting from a prior episode of angle-closure glaucoma, where the acute phase has resolved. It indicates a chronic state of the disease, often characterized by irreversible vision loss or optic nerve damage, without ongoing active angle closure. The specific eye affected is not documented.

Use this code when documentation clearly states "residual stage" or "sequelae of" angle-closure glaucoma, and there is no active angle closure or acute symptoms. This applies to patients presenting for follow-up care or management of long-term complications after the acute phase has passed. Supporting documentation would include ophthalmologist notes detailing the history of angle-closure glaucoma and current findings consistent with chronic damage.

• Do not use this code for active or acute angle-closure glaucoma; instead, select a code from the H40.21- or H40.22- series.
• Ensure documentation specifies "residual stage" or similar terminology to differentiate from other stages of glaucoma.
• If the affected eye is known, use a more specific code from the H40.24- series (e.g., H40.241 for right eye, H40.242 for left eye).