Frostbite with tissue necrosis of right ankle, sequela

This code signifies a long-term complication or late effect resulting from a frostbite injury to the right ankle, specifically involving tissue death. The necrosis indicates severe damage that has progressed beyond superficial freezing, and the "sequela" designation means the acute frostbite event has passed, but its lasting effects are still being addressed.

Use this code when documenting a patient presenting for treatment of a chronic condition or permanent damage to the right ankle that is directly attributable to a previous frostbite injury, where tissue necrosis was a feature. This would apply to follow-up visits for reconstructive surgery, wound care for chronic ulcers, or management of functional impairment stemming from the necrotic tissue.

• Ensure documentation clearly links the current ankle condition to a past frostbite injury.
• Verify that the necrosis is specifically of the right ankle and not another body part.
• This "S" code indicates a sequela; an additional code for the specific nature of the sequela (e.g., chronic ulcer, deformity) may be necessary.