Corrosion of first deg mult sites of unsp wrs/hnd, sequela

This code signifies a healed or residual effect from a first-degree corrosion (e.g., chemical burn) that affected multiple, unspecified sites on the wrist and hand. The original injury has resolved, but there are lasting consequences or late effects.

Apply this code when documenting a patient presenting with a long-term complication or sequela directly attributable to a past first-degree chemical burn involving multiple areas of the wrist and hand. This would be used for follow-up encounters addressing these persistent issues, not the initial acute injury.

• Always use an external cause code (V00-Y99) in conjunction with this code to describe the circumstances of the corrosion.
• Ensure documentation clearly links the current condition to the previous first-degree corrosion of the wrist and hand.
• This "S" seventh character indicates a sequela, meaning it's used for complications or conditions arising as a direct result of the original injury, after the acute phase has passed.