Appendix 1
Procedural Codes for Postoperative Complications Assessed in Patients With Hepatitis C and Matched Control Patients
Postoperative Complication
Code
Source Code Diagnosis
Infection within 3 mo, 6 mo, and 1 yr after TKA
CPT 10180 Incision and drainage, complex, postoperative wound infection
20005 General incision procedures of soft-tissue abscess
27310 Incision procedures on the femur (thigh region) and knee joint
29871 Endoscopy/Arthroscopy procedures on the musculoskeletal system
ICD-9-CM 996.66 Infection and inflammatory reaction due to internal joint prosthesis
996.67 Infection and inflammatory reaction due to other internal orthopedic device, implant, and graft
996.69 Infection and inflammatory reaction due to other internal prosthetic device, implant, and graft
998.51 Infected postoperative seroma 998.59 Other postoperative infection Aseptic revision
TKA within 6 mo, 1 yr, and 2 yr, and overall revision TKA up to 8 yr
postoperatively
CPT 27486 Repair, revision, and/or reconstruction
procedures on the femur (thigh region) and knee joint
27487 Revision of total knee arthroplasty, with or without allograft; femoral and entire tibial component
ICD-9-CM 00.81 Revision of knee replacement, tibial component 00.82 Revision of knee replacement, femoral
component
00.83 Revision of knee replacement, patellar component
00.84 Revision of total knee replacement, tibial insert (liner)
81.55 Revision of knee replacement, not otherwise specified
Stiffness within 3 mo
postoperatively
CPT 27570 Manipulation of knee joint under general anesthesia
ICD-9-CM 718.46 Contracture of joint, lower leg 718.56 Ankylosis of joint, lower leg
Venous ICD-9-CM 415.1 Pulmonary embolism and infarction
415.11 Iatrogenic pulmonary embolism and infarction
thromboembolis m within 3 mo postoperatively
Pulmonary embolism
415.19 Other pulmonary embolism and infarction Lower
extremity deep vein thrombosis
453.40 Acute venous embolism and thrombosis of unspecified deep vessels of lower extremity 453.41 Acute venous embolism and thrombosis of deep
vessels of proximal lower extremity
453.42 Acute venous embolism and thrombosis of deep vessels of distal lower extremity
Medical complications within 3 mo postoperatively
ICD-9-CM 410.00–410.99 Acute myocardial infarction (MI) 518.51, 518.52,
518.81, 518.82, 518.0
Respiratory failure
480.0–480.9, 482.0, 482.9
Pneumonia 430.0, 431.0,
432.0, 432.1, 432.9, 433.0, 433.01, 433.1, 433.11, 433.2, 433.20, 433.21,
433.3, 433.30, 433.31, 433.8, 433.80, 433.81,
433.9, 433.90, 433.91, 434, 434.0, 434.00, 434.01, 434.1, 434.10, 434.11,
434.9, 434.90, 434.91
Acute postoperative cerebrovascular accident
098.0, 098.1, 098.10, 098.19,
599.0, 996.64
Urinary tract infection
584.5–584.9, 580.0–580.9, 586
Acute renal failure 575.0, 574.00,
574.01
Acute cholecystitis Blood
transfusion within 3 mo postoperatively
CPT 36430 Transfusion, blood or blood components ICD-9-CM 99.00 Perioperative autologous transfusion of whole
blood or blood components
99.02 Transfusion of previously collected autologous blood
99.03 Other transfusion of whole blood
99.04 Transfusion of packed cells
V58.2 Blood transfusion, without reported diagnosis Infection within
3 mo, 6 mo, and 1 yr after THA
CPT 20005 Incision of soft tissue abscess; deep or complicated
27030 Arthrotomy, hip, with drainage for infection ICD-9-CM 996.66 Infection and inflammatory reaction due to
internal joint prosthesis
996.67 Infection and inflammatory reaction due to other internal orthopedic device, implant, and graft
996.69 Infection and inflammatory reaction due to other internal prosthetic device, implant, and graft
998.51 Infected postoperative seroma 998.59 Other postoperative infection Aseptic revision
THA within 6 mo, 1 yr, and 2 yr and overall revision THA up to 8 yr
postoperatively
CPT 27134 Revision of total hip arthroplasty; both components, with or without autograft or allograft
27137 Revision of total hip arthroplasty; acetabular component only, with or without autograft or allograft
27138 Revision of total hip arthroplasty; femoral component only, with or without allograft ICD-9-CM 00.70 Revision of hip replacement, both acetabular
and femoral components
00.71 Revision of hip replacement, acetabular component
00.72 Revision of hip replacement, femoral component
00.73 Revision of hip replacement, acetabular liner and/or femoral head only
81.53 Revision of hip replacement, not otherwise specified
CPT = Current Procedural Terminology, Fourth Edition, ICD-9-CM = International
Classification of Disease, Ninth Revision, Clinical Modification, THA = total hip arthroplasty, TKA = total knee arthroplasty