Corros 3rd deg mu left fingers (nail), including thumb, subs

This code signifies a severe chemical burn affecting multiple fingers, including the thumb, on the left hand, specifically involving the nail beds. A third-degree corrosion indicates full-thickness tissue destruction, extending through all layers of the skin and potentially into underlying structures. This diagnosis is for a patient receiving follow-up care for this specific injury.

Apply this code when documenting subsequent encounters for a patient being treated for a third-degree chemical burn to the nail beds of multiple fingers, including the thumb, on the left hand. This includes follow-up visits for wound care, debridement, skin grafting, or monitoring for complications after the initial treatment. It is appropriate for any encounter after the initial treatment phase.

• Ensure the documentation clearly specifies "corrosion" (chemical burn) rather than a thermal burn.
• Verify that multiple fingers, including the thumb, on the left hand are affected.
• Confirm the encounter is for subsequent care, indicated by the "D" seventh character.