Corrosion of first degree of unspecified wrist, sequela

This code indicates a first-degree corrosion (chemical burn) affecting an unspecified wrist, where the acute injury has healed, and the patient is now presenting for treatment of a late effect or complication of that initial burn. First-degree corrosions involve only the epidermis, causing redness and pain without blistering.

Apply this code when documenting a follow-up visit for a patient experiencing a long-term consequence or residual condition directly attributable to a first-degree chemical burn of an unspecified wrist that occurred in the past. This could include persistent discoloration, scarring, or sensitivity after the initial burn has resolved.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past first-degree chemical burn of the wrist.
• Do not use for acute chemical burns; this code is exclusively for sequelae.