Deep necrosis of underlying tissues [deep third degree] with loss of a body part, of wrist
Convert to ICD-10-CM: 
944.57 converts approximately to:
- 2015/16 ICD-10-CM T23.379A Burn of third degree of unspecified wrist, initial encounterOr: 
- 2015/16 ICD-10-CM T23.779A Corrosion of third degree of unspecified wrist, initial encounter