Frostbite of hand

This code signifies tissue damage to the hand resulting from prolonged exposure to freezing temperatures. It encompasses all degrees of frostbite, from superficial skin involvement to deep tissue necrosis affecting muscles, tendons, and bone. The injury typically presents with numbness, pallor, and eventual blistering or hardening of the affected digits or palm.

Assign this code when documentation explicitly states a diagnosis of frostbite affecting any part of the hand, including fingers, thumb, or palm. Supporting documentation should detail the anatomical site of the frostbite and the causal exposure to cold. This code is appropriate for both initial encounters and subsequent care related to the frostbite injury.

• Ensure documentation specifies "hand" as the affected anatomical site; avoid using this code for frostbite of other body parts.
• Do not confuse with cold-induced conditions like chilblains (pernio) or trench foot, which have distinct ICD-9-CM codes.
• Sequence this code as the primary diagnosis when frostbite of the hand is the reason for the encounter.