Corrosion of first degree of left thumb (nail), init encntr

This code signifies a superficial burn injury to the left thumb, specifically involving the outermost layer of skin (epidermis), often presenting with redness and mild pain without blistering. It indicates the initial treatment or evaluation for this specific injury.

Apply this code when documenting a first-degree corrosion (chemical burn) affecting the left thumb, including the nail area, during the patient's first visit for this condition. This is appropriate for minor chemical exposures resulting in superficial skin damage.

• Ensure the documentation clearly specifies "first degree" and "left thumb" for accurate code assignment.
• Verify that the encounter is indeed the "initial encounter" for this specific injury.
• Distinguish between a thermal burn and a corrosion (chemical burn) as they have different code categories.