Prolonged exposure in deep freeze unit or refrigerator, init

This code signifies an injury or adverse health effect resulting from an extended period of exposure to an extremely cold environment, specifically within a deep freeze unit or refrigerator. This exposure leads to conditions such as hypothermia, frostbite, or other cold-related tissue damage.

Apply this code when a patient presents with symptoms directly attributable to being trapped or inadvertently exposed for an extended duration inside a commercial or industrial deep freezer or refrigerator. This includes accidental lock-ins or occupational incidents where prolonged exposure to these specific cold environments occurs.

• Ensure documentation clearly specifies the exposure occurred within a "deep freeze unit" or "refrigerator" to differentiate from general cold exposure.
• Always code any resulting injuries (e.g., frostbite, hypothermia) in addition to this external cause code.
• Verify the encounter is the "initial encounter" for this specific injury; subsequent encounters would use different seventh characters.