Deep necrosis of underlying tissues [deep third degree] with loss of a body part, unspecified

This code signifies a severe burn injury characterized by full-thickness destruction of the skin and subcutaneous tissue, extending into underlying muscle, bone, or other deep structures. It specifically indicates that this extensive tissue damage has resulted in the complete loss of a body part.

Apply this code for cases involving a deep third-degree burn where the affected body part (e.g., a digit, limb, or portion thereof) is no longer present due to the burn injury itself. Documentation should clearly state "loss of body part" in conjunction with a deep or full-thickness burn extending to underlying tissues.

• Ensure documentation explicitly states "loss of a body part" in addition to the deep necrosis.
• Do not use for burns that are deep but do not result in the loss of a body part; other burn codes would be more appropriate.
• Always sequence this code after the primary burn code (e.g., 943.3 for third-degree burn of upper limb) to provide specificity regarding the extent of tissue damage and resulting loss.