Corrosion of third degree of right knee, initial encounter

This code signifies a severe chemical burn affecting the entire thickness of the skin and underlying tissue of the right knee. It indicates full-thickness destruction, often presenting with a leathery appearance, insensitivity to touch, and significant tissue damage.

Apply this code for initial treatment of a patient presenting with a third-degree chemical burn specifically located on the right knee. This includes emergency department visits, initial hospital admissions, or the first encounter for outpatient management of this specific injury.

• Ensure documentation clearly specifies "corrosion" or "chemical burn" and the "third degree" of severity.
• Confirm the laterality is explicitly "right knee" to avoid laterality errors.
• The "A" seventh character indicates an active phase of treatment for the injury, not a subsequent or sequela encounter.