Corros unsp deg mult left fingers (nail), inc thumb, init

This code signifies chemical damage of an unspecified severity affecting multiple fingers, including the thumb, on the patient's left hand, specifically involving the nail or nail bed. This injury is due to contact with a corrosive substance, such as a strong acid or alkali.

Use this code for initial encounters where a patient presents with chemical burns to the nails of multiple fingers and the thumb on their left hand. This applies when the specific degree of corrosion (e.g., first, second, or third degree) is not documented or cannot be determined at the time of the initial assessment.

• Ensure documentation clearly specifies "corrosion" or "chemical burn" rather than thermal burn.
• Verify that multiple left fingers, including the thumb, are affected, and the nail is involved.
• This code is for the initial encounter only; subsequent care will require a different seventh character.