Corrosion of 3rd deg mu sites of left ank/ft, sequela

This code signifies a severe, full-thickness chemical burn (corrosion) affecting multiple areas of the left ankle and foot. The injury has progressed beyond the acute phase, and the code indicates the long-term effects or complications resulting from the initial corrosion. This type of burn destroys all layers of skin and often underlying tissue.

This code is appropriate for documenting the sequelae of a third-degree chemical burn to multiple sites on the left ankle and foot. This would be used in follow-up encounters for conditions such as chronic pain, scarring, contractures, non-healing ulcers, or functional impairment directly attributable to the original corrosion. It should be applied when the acute phase of the injury has passed, and the patient is being treated for the lasting consequences.

• Always use this code as a secondary diagnosis, following a code that describes the specific sequela (e.g., scar, contracture).
• Ensure documentation clearly specifies "sequela" and not an acute injury.
• Verify laterality (left) and body site (ankle and foot, multiple sites) are precisely documented.