Exposure to excessive natural cold, sequela

This code identifies the long-term or residual effects resulting from a past exposure to dangerously low natural temperatures. These sequelae can manifest as chronic conditions directly attributable to the original cold injury, such as persistent pain, nerve damage, or tissue loss.

Apply this code when documenting conditions that are a direct consequence of a previous episode of excessive natural cold exposure, and the acute phase of the cold injury has resolved. Examples include chronic neuropathy following frostbite, amputation due to severe cold injury, or persistent circulatory issues in affected areas. This code should be used in conjunction with a code describing the specific sequela.

• Always sequence this sequela code after the code identifying the specific residual condition.
• Do not use this code for acute cold exposure; use codes from T33-T34 for current cold injuries.
• Ensure documentation clearly links the current condition to a past excessive natural cold exposure.