Frostbite with tissue necrosis of left foot, sequela

This code signifies the long-term effects or complications arising from frostbite that caused tissue death in the patient's left foot. It indicates that the initial frostbite injury has resolved, but the patient continues to experience residual problems directly attributable to the necrotic damage. These sequelae could include chronic pain, nerve damage, altered sensation, or functional limitations.

Apply this code when documenting a patient presenting for follow-up care or treatment of persistent conditions resulting from a past episode of frostbite with tissue necrosis specifically affecting the left foot. This is appropriate when the acute phase of the frostbite has passed, and the current encounter addresses the lasting consequences of that injury.

• Always sequence this code after the primary diagnosis for the current encounter, if applicable, to indicate the sequela.
• Ensure documentation clearly links the current condition to a previous frostbite injury of the left foot with tissue necrosis.
• Do not use this code for acute frostbite; instead, use the appropriate acute frostbite code from the T33-T34 range.