Superficial Incisional SSI Stab wound, pin site infection or stitch abscess alone is not considered an SSI. a. Time: Occurs within 30 days after any operative procedure (where day 1 = the procedure date) AND b. Site: Involves only skin and subcutaneous tissue of the incision AND c. Infection: At … Continue reading Surgical Site Infection (SSI) : CDC Definitions Simplified