Appendix Table 1.

Definitions of radical prostatectomy and conservative management from Medicare claims and Surveillance, Epidemiology, and End Results (SEER) registry data^*

Treatment		Medicare claims	SEER
Radical prostatectomy†	Exclusion	ICD-9 procedure codes 60.2-60.6	Surgery codes 30, 50, 80
		CPT-4 codes 55840, 55845, 55810, 55815
Conservative management‡	Radiation	ICD-9 diagnosis codes V58.0, V66.1, V67.1	Radiation codes 1-5, 7
		ICD-9 procedure codes 92.21-92.29
		CPT-4 codes 77261-77299, 77300, 77305, 77401-77499, 77750-77799
		Revenue center codes 0330 or 0333
	Chemotherapy	ICD-9 diagnosis code V58.1	Chemotherapy codes 01, 02, 03
		ICD-9 procedure code 99.25
		CPT-4 96400-96549, 95990, 95991, 96530, G0355, G0357-G0359, J0640, J2405, J8520-J8999, J9000-J9164, J9166-J9201, J9203-J9216, J9220-J9999, K0415, K0416, Q0083-Q0085, Q0179, S0177, S0181;
		Revenue center codes 0331, 0332, or 0335
	Hormonal therapy	J1950, J9217-J9219, J9202, J9165	Hormone therapy 01
	Prostate cancer–directed surgery	ICD-9 procedure codes 60.2–60.6	Surgery codes 30, 50, 80
		CPT-4 codes 55840, 55845, 55810, 55815

^*ICD-9 = International Classification of Diseases, Ninth Edition; CPT-4 = Current Procedural Terminology, Fourth Edition.

^†Radical prostatectomy was defined as receiving radical prostatectomy within 6 months of diagnosis.

^‡Conservative management was defined as not receiving any prostate cancer–directed surgery, radiation therapy, chemotherapy, or hormonal therapy within 6 months of diagnosis.