Immersion hand, right hand, initial encounter

This code signifies a non-freezing cold injury affecting the right hand, specifically caused by prolonged exposure to cold and wet conditions. It results from sustained vasoconstriction and tissue damage without ice crystal formation, leading to symptoms like numbness, pain, swelling, and blistering.

Assign this code for patients presenting with a newly diagnosed case of immersion injury (e.g., trench foot) localized to their right hand. This is appropriate for the initial evaluation and treatment of the condition.

• Ensure documentation clearly specifies the right hand as the affected extremity.
• Verify that the encounter is indeed the first time the patient is being seen for this specific immersion injury.
• Distinguish from frostbite, which involves tissue freezing, and other cold-related injuries.