Variable/Outcome

ICD-9 codes

IBD

Crohn’s Disease (CD)

555, 555.0, 555.1, 555.2, and 555.9

Ulcerative Colitis (UC)

556, 556.0, 556.1, 556.2, 556.3, 556.4, 556.5, 556.6, 556.8, 556.9

Appendicitis

Perforated

540.0, 540.1

Non-Perforated

540.09, 541, 542

Appendectomy

Open

47.09

Laparoscopic

47.01

Post-operative complications

Central Nervous System

997.0, 997.00, 997.01, 997.02, 997.09

Cardiac

997.1

Peripheral Vascular

997.2, 999.2

Respiratory

512.1, 997.3, 997.31, 997.39

Gastrointestinal

997.4, 997.49

Genitourinary

997.5

Hemorrhage, hematoma, or Seroma

998.1, 998.11, 998.12, 998.13, 998.2, 998.51

Wound dehiscence, rupture, nonhealing, disruption

998.3, 998.83, 998.0, 998.31, 998.32, 998.33

Postoperative Infection

998.5, 998.51, 998.59

Deep Vein Thrombosis

453.4, 453.40, 453.41, 453.42

Pulmonary Embolism

415.1, 415.11, 415.19

Postoperative Anemia

285.1

HAC

Foreign Object Retained After Surgery

998.4, 998.7

Air Embolism

999.1

Blood Incompatibility

999.6, 999.60, 999.61, 999.62, 999.63, 999.69

Pressure Ulcer Stages II & IV

707.23, 707.24

Falls and Trauma

800 - 829, 830 - 839, 850 - 854, 925 - 929, 940 - 949, 991 - 994

Catheter-Associated UTI

996.64

Vascular Catheter-Associated Infection

999.31

Manifestations of Poor Glycemic Control

250.10 - 250.13, 250.20 - 250.23, 251.0, 249.10 - 249.11, 249.20 - 249.21

Surgical Site Infection, Mediastinitis, Following CABG

519.2

And one of the following procedure codes: 36.10 - 36.19

Surgical Site Infection Following Certain Orthopedic Procedures

996.67, 998.59

And one of the following procedure codes: 81.01 - 81.08, 81.23, 81.24, 81.31 - 81.38, 81.83, 81.85

Surgical Site Infection Following Bariatric Surgery for Obesity

539.01, 539.81, 998.59

And one of the following procedure codes: 44.38, 44.39, 44.95

Deep Vein Thrombosis and Pulmonary Embolism Following Certain Orthopedic Procedures

415.11, 415.13, 415.19, 453.40 - 453.42

And one of the following procedure codes: 00.85-00.87, 81.51-81.52, 81.54