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Volume 10, Number 11—November 2004


Enhanced Identification of Postoperative Infections among Inpatients

Deborah S. Yokoe*Comments to Author , Gary A. Noskin†, Susan M. Cunningham†, Gianna Zuccotti‡, Theresa Plaskett‡, Victoria J. Fraser§, Margaret A. Olsen§, Jerome Tokars¶, Steven Solomon¶, Trish M. Perl#, Sara E. Cosgrove#, Richard S. Tilson*, Maurice Greenbaum**, David C. Hooper††, Kenneth E. Sands‡‡, John Tully§§, Loreen A. Herwaldt¶¶, Daniel J. Diekema¶¶, Edward S. Wong##, Michael Climo##, and Richard Platt***
Author affiliations: *Brigham and Women's Hospital, Boston, Massachusetts, USA; †Northwestern University, Chicago, Illinois, USA; ‡Memorial Sloan-Kettering Cancer Center, New York, New York, USA; §Washington University School of Medicine, St. Louis, Missouri, USA; ¶Centers for Disease Control and Prevention, Atlanta, Georgia, USA; #Johns Hopkins Medical Institutions, Baltimore, Maryland, USA; **North Shore Medical Center-Salem Hospital, Salem, Massachusetts, USA; ††Massachusetts General Hospital, Boston, Massachusetts, USA; ‡‡Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA; §§Mount Auburn Medical Center, Cambridge, Massachusetts, USA; ¶¶University of Iowa Carver College of Medicine, Iowa City, Iowa, USA; ##McGuire Veterans Affairs Medical Center, Richmond, Virginia, USA; ***Harvard Pilgrim Health Care, Boston, Massachusetts, USA

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Table A1

ICD-9-CM procedure and diagnosis codes to identify study procedures and screen diagnosis codes

ICD-9-CM codes Description
Procedure codes
36.10–36.14 Aortocoronary bypass of coronary artery/arteries
36.15–36.17 Internal mammary-coronary artery bypass
36.19 Other bypass anastomosis for heart revascularization
36.2 Heart revascularization by arterial implant
Cesarean delivery
74.0–74.2, 74.4 Cesarean section (classical, low cervical, extraperitoneal, of other specified type)
74.9, 74.91, 74.99 Cesarean section of unspecified type
Breast procedures
85.23 Subtotal mastectomy
85.31–85.32 Reduction mammoplasty
85.33–85.36 Subcutaneous mammectomy
5.4, 85.41–85.48 Mastectomy (unilateral or bilateral, simple or radical)
5.50 Augmentation mammoplasty
5.53 Unilateral breast implant
5.54 Bilateral breast implant
5.6 Mastopexy
5.7 Total reconstruction of breast
Diagnosis codes Description
998.5, 998.51, 998.59 Postoperative infection
674.32, 674.34 Other complications of obstetrical surgical wounds
670.02, 670.04 Major puerperal infection

aICD-9-CM, International Classification of Diseases 9th Revision Clinical Modification; CABG, coronary artery bypass graft procedures.

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