Effect of reduced temperature, unspecified, sequela

This code signifies a long-term or residual health problem resulting from exposure to reduced temperatures, where the specific effect is not documented. It indicates that a patient previously experienced a cold-related injury, and now presents with a lasting consequence that cannot be further specified.

Apply this code when a patient presents with a chronic or permanent condition clearly attributed to a past exposure to cold, such as frostbite or hypothermia, but the exact nature of the sequela is not detailed in the medical record. This would be used for conditions like persistent numbness, chronic pain, or tissue damage that occurred as a result of the initial cold exposure.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela if known.
• Ensure documentation clearly links the current condition to a past cold exposure.
• If the specific sequela (e.g., chronic pain, nerve damage) is identified, code that specific condition first, then use this code to indicate its origin.