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Table 1 Claims definition of study variables

From: Gonadotropin-releasing hormone agonist use in men without a cancer registry diagnosis of prostate cancer

Study Variablea Claims Definition
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
  1. ICD-9, International Classification of Diseases, 9th revision; CPT-4, Current Procedural Terminology, 4th edition
  2. aA diagnosis or procedure was deemed to be present if it was listed at least once in any of the outpatient, inpatient or provider Medicare claims files