Table 3. Complications: Defined Using ICD-9-CM and CPT Codes

The algorithms for constructing the complications using ICD-9-CM and CPT codes are available upon request.

CPT = Physician’s Current Procedural Terminology, 4th edition; CVA = cerebral vascular accident; GI = gastrointestinal; ICD-9-CM = International Classification of Diseases, 9th revision, Clinical Modification; TIA = transient ischemic attack.