Corrosion of third degree of right upper arm, init encntr

This code signifies a severe chemical burn affecting the full thickness of the skin and underlying tissues on the patient's right upper arm. The injury involves destruction of all skin layers, often extending into subcutaneous fat, muscle, or bone, and typically presents with a leathery, charred, or waxy appearance.

Apply this code for patients presenting with a third-degree chemical burn to the right upper arm, such as from exposure to strong acids, alkalis, or other corrosive substances. This code is appropriate for the initial treatment of the injury, including emergency department visits, initial hospital admissions, or the first encounter with a physician for this specific burn.

• Ensure documentation clearly specifies "corrosion" or "chemical burn" and the third-degree classification.
• Verify the exact anatomical site is the "right upper arm" and not another part of the arm or body.
• The "A" in the seventh character indicates an initial encounter for active treatment of the injury.