Perf due to fb acc left in body fol inject or immuniz, sqla

This code signifies a long-term complication where a perforation (a hole or tear) in a body tissue or organ is caused by a foreign object that was inadvertently retained within the body after an injection or immunization procedure. This represents a delayed or chronic effect of the retained foreign body, not the initial acute event.

Use this code when documenting a patient presenting with symptoms or findings directly attributable to a perforation that developed as a consequence of a foreign body (e.g., needle fragment, catheter tip) left behind after an injection or immunization. This applies to follow-up encounters for managing these chronic sequelae.

• Always sequence this code after the code for the specific foreign body (e.g., Z18.10 for retained needle fragment).
• Requires a seventh character "S" to indicate sequela, meaning it's a late effect of the initial adverse event.
• Do not use for acute perforations occurring at the time of the injection/immunization; those would typically fall under complications of medical care without the "sequela" designation.