Corrosion of second degree of right thumb (nail), init

This diagnosis code signifies a second-degree chemical burn affecting the right thumb, specifically including the nail. A second-degree burn involves damage to the epidermis and dermis, characterized by blistering, pain, and redness.

This code is appropriate for initial encounters where a patient presents with a chemical injury to the right thumb, including the nail, that has resulted in partial-thickness skin damage. This would include scenarios such as accidental exposure to strong acids, alkalis, or other corrosive substances.

• Ensure the documentation specifies "corrosion" or "chemical burn" and not a thermal burn.
• Verify the laterality (right thumb) and the specific body part (including the nail).
• Confirm this is the initial encounter for this specific injury; subsequent care would use a different seventh character.