Ambulatory surgery center as place

This code indicates that an injury or adverse event occurred within the physical confines of an ambulatory surgery center (ASC). It specifies the location where an external cause, such as a fall, medical error, or equipment malfunction, took place.

This code is appended to an external cause code (e.g., W01.XXXA for a fall) when the incident leading to the injury or adverse effect happened at an ASC. It is used to provide granular detail about the environment where the event originated, such as a patient falling post-procedure in the recovery area of an ASC.

• Always use this as a secondary code, following the primary external cause code.
• Ensure the medical record explicitly documents the ambulatory surgery center as the location of the incident.
• Do not use for events occurring during transport to or from an ASC, or at a physician's office that is not a licensed ASC.