Corrosion of second degree of left upper arm, init encntr

This code signifies a second-degree chemical burn, also known as a corrosion, affecting the left upper arm. This type of injury involves damage to the epidermis and dermis, characterized by blistering, pain, and redness, caused by contact with a corrosive substance.

Apply this code when documenting a patient presenting with a chemical burn to their left upper arm that has resulted in partial-thickness skin damage. This is appropriate for the initial visit for this specific injury, indicating active treatment or evaluation is underway.

• Ensure the documentation clearly specifies "corrosion" or "chemical burn" and the degree as second-degree.
• Verify the laterality is explicitly stated as "left upper arm."
• The "A" seventh character indicates an initial encounter for this specific injury.