Prolonged exposure in deep freeze unit or refrig, sequela

This code signifies the long-term or residual effects resulting from a past incident of prolonged exposure to extreme cold within a deep freeze unit or refrigerator. These sequelae can manifest as chronic pain, nerve damage, tissue loss, or other persistent conditions directly attributable to the original cold exposure. It indicates that the acute phase of the injury has passed, and the patient is now experiencing the lasting consequences.

Use this code when documenting a patient's current condition that is a direct, late effect of a previous, extended period of being trapped or exposed to freezing temperatures inside a freezer or refrigerator. This applies to follow-up visits for chronic frostbite, neuropathy, or other persistent issues stemming from such an event. It is appropriate when the initial injury has resolved, but its impact continues.

• Always sequence this sequela code after the code for the specific chronic condition being treated (e.g., chronic frostbite, neuropathy).
• Ensure documentation clearly links the current condition to the past prolonged deep freeze exposure.
• Do not use for acute frostbite or immediate effects of cold exposure; this code is exclusively for sequelae.