Frostbite with tissue necrosis of right foot, sequela

This code signifies a long-term complication or late effect resulting from frostbite that caused tissue death in the patient's right foot. It indicates that the acute frostbite injury has resolved, but the patient continues to experience issues directly attributable to the necrotic tissue damage.

Apply this code when documenting ongoing conditions, such as chronic pain, non-healing ulcers, contractures, or functional limitations, that are a direct consequence of a past frostbite injury to the right foot that involved tissue necrosis. This code is appropriate for encounters addressing these residual effects, not the initial acute injury.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., chronic ulcer, contracture).
• Ensure documentation clearly links the current condition to a prior frostbite event with tissue necrosis of the right foot.
• Do not use for acute frostbite; refer to codes in the T33-T34 range without the "S" seventh character for initial encounters.