S90-S99: Injuries to the ankle and foot

S91: Open wound of ankle and foot

The S91 category in the ICD-10 refers to a range of conditions characterized by the presence of an open wound on the ankle or foot. These injuries typically occur when the skin and underlying tissues are broken or torn, allowing direct contact with the air and potential entry of harmful microorganisms. Causes are varied and can include accidents, falls, animal bites, sharp objects, or undergoing a surgical procedure. These wounds can present with symptoms such as pain, swelling, bleeding, or discharge. Some individuals might also experience difficulty in moving the affected foot or ankle. The progression of the condition depends on several factors such as the size, depth, and location of the wound, as well as the overall health of the individual and presence of any complicating factors like infection or underlying disease. Open wounds can affect the integumentary (skin) system and, in severe cases, the musculoskeletal system of the foot or ankle.