Corrosion of third degree of right foot, sequela

This code signifies a deep tissue injury to the right foot caused by a corrosive substance, such as a strong acid or alkali, that has progressed to the third degree. This type of injury involves full-thickness destruction of the skin and underlying tissues, often resulting in permanent damage and scarring. The "sequela" designation indicates that this code is used for complications or conditions that arise as a direct result of the initial corrosion, after the acute phase of the injury has healed.

This code is appropriate for documenting long-term effects or complications of a third-degree chemical burn to the right foot, such as chronic pain, contractures, non-healing ulcers, or significant scarring that requires ongoing management. It should be used when the patient is presenting for treatment of these residual conditions, not for the initial acute injury.

• Always ensure documentation clearly specifies the sequela of the third-degree corrosion, not the acute event.
• Look for documentation indicating the corrosive agent if known, as additional external cause codes may be necessary.
• Consider additional codes for specific complications (e.g., contracture, chronic ulcer) if detailed in the medical record.