Superficial frostbite of unspecified foot, sequela

This code indicates a long-term complication or residual effect stemming from a superficial frostbite injury to an unspecified foot. This means the original frostbite was limited to the skin surface, and the patient is now presenting for treatment of a lasting issue directly attributable to that past injury.

Apply this code when documenting a patient encounter for a condition that is a direct consequence of a previously sustained superficial frostbite of the foot, where the specific foot (left or right) is not documented. Examples include chronic pain, numbness, or altered sensation in the foot resulting from the prior frostbite.

• Requires a seventh character "S" to indicate sequela, meaning the patient is being treated for the effects of the original injury, not the acute injury itself.
• Do not use for acute frostbite; use an acute frostbite code with the appropriate seventh character (A, D, or S) for initial or subsequent encounters.
• Always sequence the sequela code first, followed by codes for the specific manifestation(s) of the sequela (e.g., chronic pain, neuropathy).