Appendix Table 2.

Codes (Number (Percent)) Used to Identify Births

CodeCode DescriptionPregnanciesPatients
59400ROUTINE OBSTETRIC CARE, ANTEPARTUM CARE, VAGINAL DELIVERY, & POSTPARTUM CARE561 (8.4)553 (8.4)
59400Routine obstetric care including antepartum care, vaginal delivery (with or without episiotomy, and/or forceps) and postpartum care561 (8.4)553 (8.4)
59409Vaginal delivery only (with or without episiotomy and/or forceps)705 (10.5)675 (10.2)
59410…including postpartum care2702 (40.3)2669 (40.4)
59410VAGINAL DELIVERY ONLY (W/WO EPISIOTOMY &/OR FORCEPS); W/POSTPARTUM CARE2702 (40.3)2669 (40.4)
59510Routine obstetric care including antepartum care, cesarean delivery and postpartum care441 (6.6)439 (6.6)
59514Cesarean delivery only732 (10.9)726 (11)
59515…including postpartum care1484 (22.2)1477 (22.4)
59515CESAREAN DELIVERY ONLY; W/POSTPARTUM CARE1484 (22.2)1477 (22.4)
59610ROUTINE OBSTETRIC CARE, VAGINAL DELIVERY, W/ANTEPARTUM, POSTPARTUM CARE, PREVIOUS C-SECTION9 (0.1)9 (0.1)
59610Routine obstetric care including antepartum care, vaginal delivery (with or without episiotomy and/or forceps) and postpartum care, after previous cesarean delivery9 (0.1)9 (0.1)
59612Vaginal delivery only, after previous cesarean delivery (with or without episiotomy and/or forceps)40 (0.6)37 (0.6)
59614VAGINAL DELIVERY ONLY, PREVIOUS CESAREAN DELIVERY; W/POSTPARTUM CARE8 (0.1)8 (0.1)
59614…including postpartum care8 (0.1)8 (0.1)
59618ROUTINE OB CARE, ANTE/POSTPARTUM, CESAREAN DELIVERY AFTER FAILED VAG DELIVERY, PREV CESAREAN DELIVER1 (0)1 (0)
59618Routine obstetric care including antepartum care, cesarean delivery and postpartum care, following attempted vaginal delivery after previous cesarean delivery1 (0)1 (0)
59620Cesarean delivery only, following attempted vaginal delivery after previous cesarean delivery5 (0.1)5 (0.1)
59622CESAREAN DELIVERY, AFTER FAILED VAGINAL DELIVERY, PREVIOUS CESAREAN DELIVERY; W/POSTPARTUM CARE6 (0.1)6 (0.1)
59622…including postpartum care6 (0.1)6 (0.1)
59812Treatment of incomplete abortion, any trimester, completed surgically6 (0.1)6 (0.1)
59820Treatment of missed abortion, completed surgically; first trimester8 (0.1)8 (0.1)
O01.0Classical hydatidiform mole1 (0)1 (0)
O01.1Incomplete and partial hydatidiform mole1 (0)1 (0)
O01.9Hydatidiform mole, unspecified4 (0.1)4 (0.1)
O02.0Blighted ovum and nonhydatidiform mole28 (0.4)28 (0.4)
O02.1Missed abortion131 (2)127 (1.9)
O02.81Inappropriate change in quantitative human chorionic gonadotropin (hCG) in early pregnancy8 (0.1)8 (0.1)
O02.89Other abnormal products of conception6 (0.1)6 (0.1)
O03.1Delayed or excessive hemorrhage following incomplete spontaneous abortion2 (0)2 (0)
O03.30Unspecified complication following incomplete spontaneous abortion1 (0)1 (0)
O03.39Incomplete spontaneous abortion with other complications4 (0.1)4 (0.1)
O03.4Incomplete spontaneous abortion without complication51 (0.8)48 (0.7)
O03.5Genital tract and pelvic infection following complete or unspecified spontaneous abortion1 (0)1 (0)
O03.6Delayed or excessive hemorrhage following complete or unspecified spontaneous abortion1 (0)1 (0)
O03.80Unspecified complication following complete or unspecified spontaneous abortion6 (0.1)6 (0.1)
O03.89Complete or unspecified spontaneous abortion with other complications3 (0)3 (0)
O03.9Complete or unspecified spontaneous abortion without complication340 (5.1)328 (5)
O04.80(Induced) termination of pregnancy with unspecified complications1 (0)1 (0)
O08.89Other complications following an ectopic and molar pregnancy1 (0)1 (0)
O36.4XX0Maternal care for intrauterine death, not applicable or unspecified11 (0.2)10 (0.2)
O36.4XX1Maternal care for intrauterine death, fetus 14 (0.1)4 (0.1)
O36.4XX9Maternal care for intrauterine death, other fetus1 (0)1 (0)
O80Encounter for full-term uncomplicated delivery3082 (46)3029 (45.9)
O82Encounter for cesarean delivery without indication826 (12.3)813 (12.3)
Z33.2Encounter for elective termination of pregnancy7 (0.1)7 (0.1)
Z37.0Single live birth4837 (72.2)4794 (72.6)
Z37.1Single stillbirth10 (0.1)10 (0.2)
Z37.2Twins, both liveborn38 (0.6)37 (0.6)