Superficial frostbite of unsp knee and lower leg, sequela

This code signifies a superficial frostbite injury to an unspecified knee or lower leg, where the acute injury has healed, but residual effects or complications persist. These sequelae might include chronic pain, numbness, altered sensation, or skin discoloration resulting from the original frostbite.

Apply this code when documenting the long-term consequences of a superficial frostbite episode affecting the knee or lower leg, after the initial acute phase has resolved. It is appropriate for follow-up visits addressing ongoing symptoms directly attributable to the past frostbite injury.

• Always use the 7th character "S" for sequela when coding the long-term effects of an injury.
• Do not use this code for acute frostbite; instead, refer to the appropriate acute frostbite codes.
• Ensure documentation clearly links the current symptoms or condition to a previous superficial frostbite of the knee or lower leg.