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

This code signifies a severe chemical burn affecting multiple fingers on the left hand, excluding the thumb. The corrosion has penetrated all layers of the skin, indicating full-thickness tissue destruction.

Apply this code for initial encounters involving patients presenting with third-degree chemical burns to several fingers on their left hand, but not the thumb. This would include injuries from strong acids, bases, or other corrosive substances.

• Ensure the documentation clearly specifies "third degree" and "multiple left fingers" (excluding the thumb).
• Verify the encounter is the "initial encounter" for this specific injury.
• Distinguish from thermal burns, which are coded differently.