I have been unable to find one. AORN does not have a wound classification system. The CDC classifies wounds according to the likelihood and degree of wound contamination at the time of surgery. The four classifications are as follows. These are uninfected wounds in which no inflammation is encountered and the wound has not entered the respiratory, alimentary, genital, or urinary tracts.
Clean wounds receive primary closure and, if necessary, are drained with closed drains.
These are surgical wounds in which the respiratory, alimentary, genital, or urinary tract is entered under controlled conditions and without unusual contamination. Procedures involving the biliary tract, appendix, vagina, and oropharynx are included in this category, provided no evidence of infection or major break in technique is encountered. Wounds drained with open drains are classified as clean-contaminated wounds. Dirty or infected wounds. These include old, traumatic wounds with retained, devitalized tissue and wounds that involve existing clinical infection or perforated viscera.