Skip to main content
Intermediate Technical IVT

surgical site infection

Also written as: SSI — surgical site infection

Healthcare-associated infection occurring at the site of surgical intervention within specific time parameters.

Full Definition

Surgical site infection (SSI) is a healthcare-associated infection that occurs at or near the surgical incision site within 30 days of operation, or within 90 days if an implant is placed. SSIs are classified as superficial incisional, deep incisional, or organ/space infections based on anatomical involvement. Risk factors include patient comorbidities, surgical factors, and environmental conditions. Diagnosis requires specific clinical criteria including purulent drainage, positive cultures, or signs of inflammation. Prevention strategies and documentation of infections are critical for quality improvement and regulatory reporting.

Usage

Usage note: Classify as superficial, deep, or organ/space infection and document according to CDC criteria.

In Context

  • "The patient developed a superficial surgical site infection requiring antibiotic therapy." — postoperative note
  • "Deep surgical site infection was confirmed by positive tissue cultures." — infectious disease consultation

Also known as

SSI wound infection

Contrasted with

clean wound

Don't confuse with

wound dehiscence seroma

Editors from these organisations have used our services since 1998

Reuters BBC Oxford University Press Penguin Random House Springer Microsoft Suncor Energy United Nations Fisher Investments IBM The Home Depot KODAK CHEVRON