Table 1: ICD-9 and CPT/HCPCS codes used to identify treatment modality.
| Treatment | ICD-9 codes | HCPCS |
| Immediate radiation treatment | V58.0, V66.1, V67.1, 92.21-92.29 | 77401-77499, 77750-77799, 77014, 77334, 77336, 77520, 77522-77525 |
| Prostatectomy | 60.5, 60.2, 60.21-60.29, 60.3-60.6, 60.61, 60.62, 60.69, 60.9 |
55812-55845, 55866, 55810, 55899, 55867-55880 |
| Chemotherapy | V58.1, V66.2, V67.2, 99.25 | 96401-96549 |