Foreign body accidentally left during a procedure

This code signifies the presence of a foreign object that was inadvertently retained within a patient's body following a surgical or other invasive medical procedure. This can include items such as sponges, instruments, or other materials that should have been removed but were left behind. It represents a complication directly attributable to the medical intervention.

This code is appropriate when documentation clearly indicates that a foreign body was discovered in a patient and was confirmed to have been left during a prior medical procedure. This typically requires operative reports, imaging studies, and physician notes detailing the discovery and removal (if applicable) of the retained object. It should be used as a secondary diagnosis following the primary reason for the patient's current encounter.

• Always sequence this code after the primary diagnosis for the current encounter (e.g., pain, infection, or the reason for removal of the foreign body).
• Do not confuse this with codes for foreign bodies entering the body through natural orifices or accidental puncture wounds not related to a procedure.
• Ensure the documentation explicitly states the foreign body was "accidentally left" or "retained" during a procedure, not just present.