Table 1 Claims definition of study variables

Prostate cancer diagnosis

ICD-9 diagnosis code 185.xx in first position

History of prostate cancer

ICD-9 diagnosis code V10.46

Radical Prostatectomy

Any of:ICD-9 procedure code 60.5 or CPT-4 codes 55801,55810,55812,55815,55821,55831,55842,55845

Radiation Treatment

Any of: ICD-9 procedure code 92.2× or ICD-9 diagnosis codes V58.0, V66.1, V67.1 or CPT-4 codes 77621–77499, 77600–77620, 77750–77799, 79200–79999 or Revenue codes 330, 333, 339, 342

Prostate Biopsy

Any of: ICD-9 procedure codes 60.1 or CPT codes 55700–55705

Transurethral resection of prostate

Any of: ICD-9 procedure code 60.2 or CPT-4 codes 52612, 52614, 52647, 52468

Transrectal ultrasound

Any of: CPT-4 codes 76872, 76873

Pelvic computed tomographic scanning or magnetic resonance imaging

Any of: ICD-9 procedure codes 88.01, 88.95 or CPT-4 codes 72192–72194, 74150, 74160, 74170–74175, 72195–72197, Health Care Common Procedure Code A9507

Bone Scan

Any of: ICD-9 procedure code 92.14, CPT-4 codes 78300, 78305, 78306, 78315, 78320