Corrosion of unsp eye and adnexa, part unsp, init encntr

This code signifies damage to the eye or surrounding structures (adnexa) caused by a corrosive substance, where the specific part of the eye affected is not documented. It indicates the initial presentation of this injury, prior to any definitive treatment.

Use this code when documentation clearly states a chemical burn to the eye, but lacks specificity regarding the exact ocular structure involved (e.g., cornea, conjunctiva, eyelid). This is appropriate for the first encounter for treatment of such an injury.

• Ensure the documentation explicitly states "corrosion" or "chemical burn" to the eye.
• Only use this code when the specific part of the eye affected by the corrosion is not identified.
• Append additional characters for subsequent encounters (A for initial, D for subsequent, S for sequela) as appropriate.