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

This code signifies damage to the skin and/or underlying tissue of multiple fingers on the left hand, including the thumb, due to chemical exposure. The severity of the corrosion is not specified, indicating a lack of detailed documentation regarding the depth of injury (e.g., first, second, or third degree).

Apply this code when a patient presents for follow-up care, such as wound checks, dressing changes, or medication adjustments, for a previously diagnosed chemical burn affecting multiple left fingers and the thumb. This code is appropriate for encounters occurring after the initial treatment of the injury.

• Ensure documentation clearly states "corrosion" or "chemical burn" and specifies multiple left fingers, including the thumb.
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing phase.
• If the degree of corrosion is specified (e.g., first, second, or third degree), a more specific code should be used.