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.