Corros first deg mult right fingers (nail), inc thumb, subs

This code signifies a first-degree corrosion affecting multiple fingers on the right hand, specifically involving the nail, including the thumb. A first-degree corrosion indicates superficial damage, similar to a first-degree burn, affecting only the outermost layer of the skin. This particular code is for a subsequent encounter, meaning the patient is receiving follow-up care for this injury.

Apply this code when a patient presents for follow-up treatment of a chemical burn to the nails of multiple right fingers, including the thumb, that was initially classified as a first-degree injury. This would include scenarios such as wound checks, dressing changes, or medication refills related to the initial corrosion. It is appropriate for ongoing management after the initial acute phase.

• Ensure documentation specifies "corrosion" (chemical burn) rather than a thermal burn.
• Verify that multiple right fingers, including the thumb, and the nail are explicitly mentioned as affected.
• Confirm this is a subsequent encounter for ongoing care, not the initial treatment.