Corrosion of unsp deg mult sites of unsp wrs/hnd, subs

This code indicates a chemical burn of an unspecified severity affecting multiple areas of the wrist and hand, where the patient is receiving follow-up care for the injury. The specific agent causing the corrosion is not identified, nor is the precise degree of tissue damage.

Apply this code when a patient presents for ongoing treatment (e.g., wound care, physical therapy) of a chemical burn to their wrist and hand, and the initial encounter for the injury has already been coded. This is used when the exact degree of corrosion (e.g., first, second, third) and the specific sites on the wrist and hand are not documented.

• Ensure the "D" seventh character is appropriate for a subsequent encounter for healing or routine follow-up.
• Only use this code when the degree of corrosion and specific sites are truly unspecified in the medical record.
• If the laterality (left/right) is known, a more specific code should be selected.