Corrosion of third degree of unspecified thigh, sequela

This code signifies a third-degree corrosion (chemical burn) of an unspecified thigh, indicating that the acute injury has healed but its lasting effects, such as scarring, contracture, or chronic pain, are now being treated. The "sequela" designation means the current encounter is for managing a complication or residual condition directly resulting from the original corrosion.

Use this code when a patient presents for treatment of a long-term complication or residual effect of a third-degree chemical burn to the thigh, where the specific thigh (right or left) is not documented. This applies to follow-up visits for scar revision, physical therapy for contracture, or pain management related to the healed burn.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., L90.5 for scar, M24.55- for contracture).
• Ensure documentation clearly states the burn was a "corrosion" (chemical burn) and not a thermal burn.
• Only use this code when the acute phase of the corrosion has passed and the patient is being treated for a residual condition.