Corrosion of second degree of left ankle and foot, subs

This code signifies a second-degree chemical burn affecting the left ankle and/or foot, indicating damage beyond the epidermis to include the dermis. This type of injury typically presents with blistering, significant pain, and redness.

Apply this code when a patient is receiving follow-up care for a previously diagnosed second-degree corrosion of the left ankle and foot. This includes situations such as wound checks, dressing changes, or monitoring for healing or complications after the initial treatment.

• Ensure documentation specifies "corrosion" (chemical burn) rather than a thermal burn.
• Confirm the encounter is for subsequent care, not the initial treatment of the injury.
• Verify the laterality is explicitly documented as "left" for the ankle and/or foot.