| A | B |
|---|
| Surgical incision wounds/nonpenetrating | clean |
| Surgical wounds that do NOT involve the respiratory tract | clean |
| Surgical wounds that do NOT involve the alimentary tract | clean |
| Surgical wounds that do NOT involve the genital tract | clean |
| Exploratory laparotomy | clean |
| Prosthetic joint replacement | clean |
| Vascular surgery | clean |
| Surgical wound that involves surgery within the respiratory tract | clean/contaminated |
| Surgical wound that involves surgery within the alimentary tract | clean/contaminated |
| Surgical wound that involves surgery within the urinary tract | clean/contaminated |
| No breaks in sterile technique during the procedure | clean |
| Transurethral resection of prostate | clean/contaminated |
| Bowel resection with formation of colostomy | clean/contaminated |
| Bronchoscopy with biopsy | clean/contaminated |
| Major breaks in sterile procedures including contents from the GI tract | contaminated |
| Bile spillage during cholecystectomy | contaminated |
| Surgery for diverticular disease | contaminated |
| Surgery for perforated bowel | dirty/infected |
| Surgery for perforated appendix | dirty/infected |
| Peritonitis | dirty/infected |
| Insertion of grommets for otitis media | dirty/infected |
| The presence of an abscess | dirty/infected |
| Infected viscera prior to surgery | dirty/infected |
| Open motorcycle fracture | dirty/infected |
