Superficial frostbite of left knee and lower leg, subs

This code signifies a superficial cold-induced injury to the left knee and lower leg, specifically frostbite affecting only the skin and subcutaneous tissue. The patient is presenting for follow-up care or treatment of complications related to this initial frostbite episode.

Apply this code when documenting subsequent encounters for a patient previously diagnosed with superficial frostbite of the left knee and lower leg. This includes visits for wound care, monitoring healing progress, or addressing minor complications such as blistering or desquamation.

• Ensure documentation clearly specifies "superficial" frostbite and the affected body part (left knee and lower leg).
• Verify the encounter type is "subsequent" (D) and not initial (A) or sequela (S).
• Do not use for deep frostbite or frostbite affecting other body regions.