Corrosion of second degree of left thigh, sequela

This code signifies a second-degree chemical burn, also known as corrosion, affecting the left thigh, where the acute injury has healed and the patient is now presenting for treatment of a residual condition or complication arising from that initial burn. This indicates a deeper burn that has damaged the epidermis and dermis, resulting in blistering, pain, and potential scarring or other long-term effects.

Use this code when documenting follow-up care for a patient who previously sustained a second-degree chemical burn to their left thigh, and the current encounter addresses a sequela such as scar revision, chronic pain, contracture, or other persistent issues directly related to the original injury. This code is appropriate after the initial healing phase of the acute burn has concluded.

• Always use this code with an external cause code (V00-Y99) to identify the circumstances of the corrosion.
• Ensure documentation clearly states "left thigh" and specifies "second degree" corrosion, with an indication that the encounter is for a sequela.
• Do not use this code for initial treatment of an acute second-degree corrosion; instead, use the acute phase code.