Corros 3rd deg mu left fingers (nail), not inc thumb, subs

This code signifies a severe chemical burn affecting multiple fingers on the left hand, excluding the thumb, where the damage extends through all layers of the skin. The injury involves the nail and surrounding tissue, indicating full-thickness destruction. This specific code is used when the patient is receiving follow-up care for this corrosion.

Apply this code for patients presenting for ongoing treatment, such as wound care, debridement, or skin grafting, for a previously diagnosed third-degree chemical burn to multiple left fingers (excluding the thumb). It is appropriate for encounters after the initial treatment of the acute injury.

• Ensure the documentation clearly specifies "corrosion" (chemical burn) and not a thermal burn.
• Verify that multiple fingers on the left hand, excluding the thumb, are affected.
• Confirm that the encounter is for subsequent care, not the initial treatment.