Gangrene

This code represents tissue death caused by a lack of blood supply, often complicated by bacterial infection. It can affect any part of the body, but most commonly involves the extremities, and presents with discoloration, severe pain, and foul odor.

Assign this code when documentation explicitly states a diagnosis of gangrene, regardless of the underlying cause. This includes dry, wet, gas, or Fournier's gangrene. Supporting documentation should clearly describe the affected area and the presence of necrotic tissue.

• Always code the underlying cause of the gangrene (e.g., diabetes, atherosclerosis) first, if known and documented.
• Do not use this code for simple necrosis or tissue death without the specific diagnosis of gangrene.
• Be sure to specify the site of the gangrene with an additional code, if available and documented.