Table S1.
Procedure and diagnosis codes
| Billing codes for ovarian cancer surgery |
| ICD-9 procedure codes (inpatient hospital claims data) |
| 54.4 Omentectomy, excision, destruction of peritoneal tissue |
| 65.2 Wedge resection or partial excision of ovary |
| 65.3* Unilateral oophorectomy |
| 65.4* Bilateral oophorectomy |
| 65.6* Bilateral salpingo-oophorectomy |
| 68.3* Hysterectomy |
| 68.4* Hysterectomy |
| 68.5* Hysterectomy |
| 68.6* Hysterectomy |
| 68.7* Hysterectomy |
| 68.8 Pelvic exenteration |
| 68.9* Hysterectomy |
| 70.32 Excision/destruction of cul de sac lesion |
| Billing codes for chemotherapy |
| DRG (inpatient hospital claims data) |
| 410 |
| ICD-9 procedure code (inpatient, outpatient and physician/supplier claims data) |
| 99.25 |
| ICD-9 diagnosis codes (inpatient, outpatient, and physician/supplier claims data) |
| V58.1,V66.2,V67.2,E9331, E9307 |
| HCPCS codes (outpatient and physician claims data) |
| Q0083–Q0085, G0355–G0356, G0359–G0362, J8530, J8560, J8565, J8600, J8700, J8999, J9000–J9999, 964*, 965* |
| Revenue center codes (outpatient claims data) |
| 0331, 0332, 0335 |
Abbreviations: DRG, diagnosis related group; HCPCS, Healthcare Common Procedure Coding System; ICD-9, International Classification of Diseases, Ninth Revision.