Table 1.

Medical classification codes used for identification of outcomes of interest

Endometrial cancer

ICD-9-CM 182.0; ICD-10-CM C54.x

Atypical hyperplasia

ICD-9-CM 621.33; ICD-10-CM N85.02

Miscarriage

CPT 59812–59866; ICD-9-CM 634.xx; ICD-10-CM O03.xx; ICD-10-PCS 10A00ZZ, 10A03ZZ, 10A04ZZ

Ectopic pregnancy

ICD-9-CM 633.xx; ICD-10-CM O00.xx

Pregnancy

CPT 76801–76817; ICD-9-CM V22.x, V23.x, 650, 651xx; ICD-10-CM Z33.x, Z34.x, Z36.2, O09.x, O30.x, O31.x, O35.x, O36.x

Delivery

CPT 59400–59410, 59510–59525, 59610–59614; ICD-9-CM 74.x, 72.x, ICD-10-PCS 10D00Z1, 10D00Z0, 10D00Z2, 0W8NXZZ, 10D07Z5, 10D07Z4, 10D07Z3

Assisted fertility services & in-vitro fertilization

CPT 58322, 58970–58976, 89250–89291, 89335–89356; ICD-9-CM 65.91, 256.1, 628.0, V26.81; ICD-10-CM N97.x, Z31.83; ICD-10-PCS 0U90xx, 0U91xx, 0UDNxxx; HCPCS S4011-S4042, S4989, J0725, J1620, J1675, S0132, S0122, S0126, S0128, J3355, J9202, J9217, J9218, J9219, J1950

Hysterectomy

CPT 58150, 58180, 58200, 58210, 58541–58548, 58550–58554, 58570–58573, 58953–58956, 59100; ICD-9-CM 68.x; ICD-10-PCS 0UT9xxx, 0UTC0ZZ, 0UTC4ZZ, 0UTC7ZZ, 0UTC8ZZ, 0UT40ZZ, 0UT44ZZ, 0UT47ZZ, 0UT48ZZ; HCPCS S2900

Use of ovulation induction agents

letrozole, clomiphene citrate, tamoxifen citrate, follitropin, menotropin, urofollitropin, chorionic gonadotropin, choriogonadotropin alfa, cetrorelix acetate, triptorelin, ganirelix acetate

Use of progestin therapy

megestrol acetate, medroxyprogesterone acetate, levonorgestrel intrauterine device

ICD: International Classification of Diseases; CPT: Current Procedural Terminology; HCPCS: Healthcare Common Procedure Coding System.