Prolonged exposure in deep freeze unit or refrigerator, subs

This code signifies an injury or adverse health effect resulting from extended exposure to extremely cold temperatures within a deep freeze unit or refrigerator. This typically involves conditions like frostbite, hypothermia, or other cold-induced tissue damage. The "D" in the seventh character indicates that this is a subsequent encounter for the injury.

Apply this code when a patient presents for follow-up care, treatment, or evaluation of an injury initially sustained from prolonged exposure to the cold environment of a deep freeze or refrigerator. This includes scenarios such as wound care for frostbite, monitoring for complications of hypothermia, or physical therapy for cold-induced nerve damage.

• Ensure the encounter is for follow-up care, not the initial treatment.
• Always code the specific nature of the injury (e.g., frostbite, hypothermia) first, followed by this external cause code.
• Verify the documentation clearly states the exposure occurred in a deep freeze unit or refrigerator.