Immersion hand, unspecified hand, initial encounter

This code signifies a non-freezing cold injury to an unspecified hand, resulting from prolonged exposure to cold and wet conditions. It typically involves nerve and vascular damage, leading to symptoms like numbness, tingling, pain, and swelling, without actual tissue freezing.

Apply this code when documenting the initial treatment for a patient presenting with symptoms of immersion hand (trench hand) where the specific hand (left or right) is not documented. This is appropriate for conditions caused by prolonged exposure to cold, wet environments, such as those experienced by soldiers, fishermen, or homeless individuals.

• Ensure documentation clearly states "unspecified hand" if laterality is not provided.
• This code is for the initial encounter; subsequent encounters will require different seventh characters.
• Distinguish from frostbite, which involves actual tissue freezing.