Corrosion of first degree of right upper arm, init encntr

This code signifies a superficial chemical burn affecting the right upper arm, characterized by redness and pain without blistering or skin breakdown. It indicates damage limited to the epidermis, often caused by brief contact with a corrosive substance.

Apply this code when documenting a patient's initial presentation for a first-degree chemical burn to the right upper arm. This is appropriate for cases where the skin is red and painful but intact, and the injury is due to a corrosive agent.

• Ensure the documentation specifies "first degree" and "right upper arm" for accurate code assignment.
• Verify the cause is a "corrosion" (chemical burn) rather than a thermal burn.
• The "A" seventh character indicates an initial encounter for this specific injury.