Corros 2nd deg mul left fingers (nail), inc thumb, subs

This code describes a second-degree chemical burn affecting multiple fingers, including the thumb, on the patient's left hand, specifically involving the nail area. A second-degree corrosion indicates damage extending beyond the epidermis into the dermis, characterized by blistering, pain, and redness.

Use this code for follow-up encounters when a patient is receiving ongoing treatment for a second-degree chemical burn to the nails of multiple left fingers and thumb. This applies when the initial treatment has been completed and the patient is returning for wound care, medication adjustments, or monitoring of healing progress.

• Ensure documentation specifies "corrosion" (chemical burn) rather than a thermal burn.
• Verify the laterality (left hand) and the specific digits involved (multiple fingers, including thumb).
• Confirm this is a "subsequent encounter" for ongoing care, not the initial treatment or a sequela.