Source Code Name Case count Share of cases (%)
OUTPAT OUTPAT_ICD10(O470) False labour before 37 completed weeks of gestation 13094
OUTPAT OUTPAT_ICD10(O342) Maternal care due to uterine scar from previous surgery 9840
INPAT INPAT_ICD10(O342) Maternal care due to uterine scar from previous surgery 7739
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O470) False labour before 37 completed weeks of gestation. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 7331
OUTPAT OUTPAT_ICD10(O321) Maternal care for breech presentation 6888
INPAT INPAT_ICD10(O470) False labour before 37 completed weeks of gestation 5377
OUTPAT OUTPAT_ICD10(O366) Maternal care for excessive fetal growth 5242
OUTPAT OUTPAT_ICD10(O429) Premature rupture of membranes, unspecified 5172
OUTPAT OUTPAT_ICD10(O471) False labour at or after 37 completed weeks of gestation 5095
INPAT INPAT_ICD10(O321) Maternal care for breech presentation 4451
OUTPAT OUTPAT_ICD10(O48) Prolonged pregnancy 4425
OUTPAT OUTPAT_ICD10(O365) Maternal care for poor fetal growth 4096
INPAT INPAT_ICD10(O48) Prolonged pregnancy 4038
INPAT INPAT_ICD10(O366) Maternal care for excessive fetal growth 3742
OUTPAT OUTPAT_ICD10(O351) Maternal care for (suspected) chromosomal abnormality in fetus 3412
OUTPAT OUTPAT_ICD10(O358) Maternal care for other (suspected) fetal abnormality and damage 2964
INPAT INPAT_ICD10(O365) Maternal care for poor fetal growth 2622
INPAT INPAT_ICD10(O429) Premature rupture of membranes, unspecified 2550
OUTPAT OUTPAT_ICD10(O410) Oligohydramnios 2440
OUTPAT OUTPAT_ICD10(O368) Maternal care for other specified fetal problems 2306
OUTPAT OUTPAT_ICD10(O469) Antepartum haemorrhage, unspecified 2239
INPAT INPAT_ICD10(O471) False labour at or after 37 completed weeks of gestation 2230
OUTPAT OUTPAT_ICD10(O300) Twin pregnancy 2122
OUTPAT OUTPAT_ICD10(O420) Premature rupture of membranes, onset of labour within 24 hours 1875
INPAT INPAT_ICD10(O410) Oligohydramnios 1840
INPAT INPAT_ICD10(O300) Twin pregnancy 1586
OUTPAT OUTPAT_ICD10(O40) Polyhydramnios 1497
INPAT INPAT_ICD10(O421) Premature rupture of membranes, onset of labour after 24 hours 1439
OUTPAT OUTPAT_ICD10(O479) False labour, unspecified 1387
OUTPAT OUTPAT_ICD10(O359) Maternal care for (suspected) fetal abnormality and damage, unspecified 1372
INPAT INPAT_ICD10(O420) Premature rupture of membranes, onset of labour within 24 hours 1359
INPAT INPAT_ICD10(O411) Infection of amniotic sac and membranes 1308
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O47) False labour. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 1239
INPAT INPAT_ICD10(O469) Antepartum haemorrhage, unspecified 1191
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O479) False labour, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 1144
OUTPAT OUTPAT_ICD10(O440) Placenta praevia specified as without haemorrhage 1033
INPAT INPAT_ICD10(O358) Maternal care for other (suspected) fetal abnormality and damage 897
OUTPAT OUTPAT_ICD10(O369) Maternal care for fetal problem, unspecified 805
OUTPAT OUTPAT_ICD10(O322) Maternal care for transverse and oblique lie 753
INPAT INPAT_ICD10(O40) Polyhydramnios 749
INPAT INPAT_ICD10(O369) Maternal care for fetal problem, unspecified 712
OUTPAT OUTPAT_ICD10(O421) Premature rupture of membranes, onset of labour after 24 hours 616
OUTPAT OUTPAT_ICD10(O441) Placenta praevia with haemorrhage 596
OUTPAT OUTPAT_ICD10(O343) Maternal care for cervical incompetence 580
INPAT INPAT_ICD10(O368) Maternal care for other specified fetal problems 573
OUTPAT OUTPAT_ICD10(O3000) Twin pregnancy with separate amniotic and chorionic sacs 564
INPAT INPAT_ICD10(O364) Maternal care for intrauterine death 561
INPAT INPAT_ICD10(O441) Placenta praevia with haemorrhage 541
INPAT INPAT_ICD10(O479) False labour, unspecified 508
OUTPAT OUTPAT_ICD10(O341) Maternal care for tumour of corpus uteri 483
OUTPAT OUTPAT_ICD10(O364) Maternal care for intrauterine death 458
INPAT INPAT_ICD10(O3000) Twin pregnancy with separate amniotic and chorionic sacs 444
OUTPAT OUTPAT_ICD10(O363) Maternal care for signs of fetal hypoxia 441
OUTPAT OUTPAT_ICD10(O320) Maternal care for unstable lie 425
INPAT INPAT_ICD10(O343) Maternal care for cervical incompetence 412
INPAT INPAT_ICD10(O440) Placenta praevia specified as without haemorrhage 408
OUTPAT OUTPAT_ICD10(O418) Other specified disorders of amniotic fluid and membranes 401
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O321) Maternal care for breech presentation. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 392
INPAT INPAT_ICD10(O459) Premature separation of placenta, unspecified 366
INPAT INPAT_ICD10(O363) Maternal care for signs of fetal hypoxia 365
OUTPAT OUTPAT_ICD10(O468) Other antepartum haemorrhage 364
OUTPAT OUTPAT_ICD10(O419) Disorder of amniotic fluid and membranes, unspecified 356
OUTPAT OUTPAT_ICD10(O352) Maternal care for (suspected) hereditary disease in fetus 345
OUTPAT OUTPAT_ICD10(O339) Maternal care for disproportion, unspecified 299
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O342) Maternal care due to uterine scar from previous surgery. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 299
OUTPAT OUTPAT_ICD10(O340) Maternal care for congenital malformation of uterus 297
INPAT INPAT_ICD10(O322) Maternal care for transverse and oblique lie 296
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O300) Twin pregnancy. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 292
INPAT INPAT_ICD10(O333) Maternal care for disproportion due to outlet contraction of pelvis 284
INPAT INPAT_ICD10(O351) Maternal care for (suspected) chromosomal abnormality in fetus 256
INPAT INPAT_ICD10(O341) Maternal care for tumour of corpus uteri 246
OUTPAT OUTPAT_ICD10(O335) Maternal care for disproportion due to unusually large fetus 241
INPAT INPAT_ICD10(O335) Maternal care for disproportion due to unusually large fetus 232
OUTPAT OUTPAT_ICD10(O348) Maternal care for other abnormalities of pelvic organs 213
OUTPAT OUTPAT_ICD10(O355) Maternal care for (suspected) damage to fetus by drugs 211
OUTPAT OUTPAT_ICD10(O360) Maternal care for rhesus isoimmunization 207
INPAT INPAT_ICD10(O320) Maternal care for unstable lie 204
INPAT INPAT_ICD10(O331) Maternal care for disproportion due to generally contracted pelvis 203
INPAT INPAT_ICD10(O359) Maternal care for (suspected) fetal abnormality and damage, unspecified 203
INPAT INPAT_ICD10(O339) Maternal care for disproportion, unspecified 199
INPAT INPAT_ICD10(O468) Other antepartum haemorrhage 199
INPAT INPAT_ICD10(O418) Other specified disorders of amniotic fluid and membranes 190
OUTPAT OUTPAT_ICD10(O3001) Twin pregnancy with a shared chorionic sac and a separate amniotic sac 187
OUTPAT OUTPAT_ICD10(O350) Maternal care for (suspected) central nervous system malformation in fetus 186
INPAT INPAT_ICD10(O334) Maternal care for disproportion of mixed maternal and fetal origin 184
INPAT INPAT_ICD10(O458) Other premature separation of placenta 178
OUTPAT OUTPAT_ICD10(O344) Maternal care for other abnormalities of cervix 175
INPAT INPAT_ICD10(O340) Maternal care for congenital malformation of uterus 173
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O366) Maternal care for excessive fetal growth. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 172
OUTPAT OUTPAT_ICD10(O333) Maternal care for disproportion due to outlet contraction of pelvis 158
INPAT INPAT_ICD10(O360) Maternal care for rhesus isoimmunization 157
INPAT INPAT_ICD10(O3001) Twin pregnancy with a shared chorionic sac and a separate amniotic sac 138
INPAT INPAT_ICD10(O332) Maternal care for disproportion due to inlet contraction of pelvis 137
INPAT INPAT_ICD10(O422) Premature rupture of membranes, labour delayed by therapy 134
OUTPAT OUTPAT_ICD10(O411) Infection of amniotic sac and membranes 129
INPAT INPAT_ICD10(O328) Maternal care for other malpresentation of fetus 122
OUTPAT OUTPAT_ICD10(O331) Maternal care for disproportion due to generally contracted pelvis 120
OUTPAT OUTPAT_ICD10(O349) Maternal care for abnormality of pelvic organ, unspecified 112
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O471) False labour at or after 37 completed weeks of gestation. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 112
OUTPAT OUTPAT_ICD10(O354) Maternal care for (suspected) damage to fetus from alcohol 109
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O365) Maternal care for poor fetal growth. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 107
OUTPAT OUTPAT_ICD10(O422) Premature rupture of membranes, labour delayed by therapy 102
INPAT INPAT_ICD10(O355) Maternal care for (suspected) damage to fetus by drugs 98
OUTPAT OUTPAT_ICD10(O361) Maternal care for other isoimmunization 98
OUTPAT OUTPAT_ICD10(O332) Maternal care for disproportion due to inlet contraction of pelvis 89
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O3000) Twin pregnancy with separate amniotic and chorionic sacs. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 89
OUTPAT OUTPAT_ICD10(O347) Maternal care for abnormality of vulva and perineum 86
INPAT INPAT_ICD10(O344) Maternal care for other abnormalities of cervix 81
INPAT INPAT_ICD10(O348) Maternal care for other abnormalities of pelvic organs 81
INPAT INPAT_ICD10(O419) Disorder of amniotic fluid and membranes, unspecified 78
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O358) Maternal care for other (suspected) fetal abnormality and damage. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 78
INPAT INPAT_ICD10(O347) Maternal care for abnormality of vulva and perineum 76
OUTPAT OUTPAT_ICD10(O328) Maternal care for other malpresentation of fetus 74
OUTPAT OUTPAT_ICD10(O438) Other placental disorders 74
OUTPAT OUTPAT_ICD10(O459) Premature separation of placenta, unspecified 73
OUTPAT OUTPAT_ICD10(O301) Triplet pregnancy 72
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O469) Antepartum haemorrhage, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 72
INPAT INPAT_ICD10(O361) Maternal care for other isoimmunization 71
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O48) Prolonged pregnancy. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 71
INPAT INPAT_ICD10(O438) Other placental disorders 70
INPAT INPAT_ICD10(O330) Maternal care for disproportion due to deformity of maternal pelvic bones 66
INPAT INPAT_ICD10(O350) Maternal care for (suspected) central nervous system malformation in fetus 66
OUTPAT OUTPAT_ICD10(O334) Maternal care for disproportion of mixed maternal and fetal origin 64
INPAT INPAT_ICD10(O352) Maternal care for (suspected) hereditary disease in fetus 60
OUTPAT OUTPAT_ICD10(O47) False labour 60
OUTPAT OUTPAT_ICD10(O324) Maternal care for high head at term 59
OUTPAT OUTPAT_ICD10(O312) Continuing pregnancy after intrauterine death of one fetus or more 58
OUTPAT OUTPAT_ICD10(O362) Maternal care for hydrops fetalis 57
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O40) Polyhydramnios. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 52
INPAT INPAT_ICD10(O450) Premature separation of placenta with coagulation defect 51
INPAT INPAT_ICD10(O460) Antepartum haemorrhage with coagulation defect 51
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O322) Maternal care for transverse and oblique lie. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 48
INPAT INPAT_ICD10(O301) Triplet pregnancy 47
INPAT INPAT_ICD10(O354) Maternal care for (suspected) damage to fetus from alcohol 44
INPAT INPAT_ICD10(O430) Placental transfusion syndromes 44
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O440) Placenta praevia specified as without haemorrhage. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 44
OUTPAT OUTPAT_ICD10(O439) Placental disorder, unspecified 42
INPAT INPAT_ICD10(O338) Maternal care for disproportion of other origin 41
OUTPAT OUTPAT_ICD10(O329) Maternal care for malpresentation of fetus, unspecified 41
OUTPAT OUTPAT_ICD10(O309) Multiple gestation, unspecified 40
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O410) Oligohydramnios. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 38
INPAT INPAT_ICD10(O324) Maternal care for high head at term 36
OUTPAT OUTPAT_ICD10(O430) Placental transfusion syndromes 35
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O368) Maternal care for other specified fetal problems. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 35
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O36) Maternal care for other known or suspected fetal problems. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 34
INPAT INPAT_ICD10(O325) Maternal care for multiple gestation with malpresentation of one fetus or more 33
OUTPAT OUTPAT_ICD10(O330) Maternal care for disproportion due to deformity of maternal pelvic bones 33
INPAT INPAT_ICD10(O362) Maternal care for hydrops fetalis 31
OUTPAT OUTPAT_ICD10(O458) Other premature separation of placenta 31
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O32) Maternal care for known or suspected malpresentation of fetus. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 31
INPAT INPAT_ICD10(O323) Maternal care for face, brow and chin presentation 30
INPAT INPAT_ICD10(O432) Morbidly adherent placenta 29
OUTPAT OUTPAT_ICD10(O311) Continuing pregnancy after abortion of one fetus or more 29
INPAT INPAT_ICD10(O312) Continuing pregnancy after intrauterine death of one fetus or more 28
OUTPAT OUTPAT_ICD10(O318) Other complications specific to multiple gestation 28
INPAT INPAT_ICD10(O349) Maternal care for abnormality of pelvic organ, unspecified 27
OUTPAT OUTPAT_ICD10(O345) Maternal care for other abnormalities of gravid uterus 27
OUTPAT OUTPAT_ICD10(O460) Antepartum haemorrhage with coagulation defect 27
OUTPAT OUTPAT_ICD10(O356) Maternal care for (suspected) damage to fetus by radiation 26
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O441) Placenta praevia with haemorrhage. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 26
INPAT INPAT_ICD10(O439) Placental disorder, unspecified 25
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O3001) Twin pregnancy with a shared chorionic sac and a separate amniotic sac. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 25
INPAT INPAT_ICD10(O318) Other complications specific to multiple gestation 23
INPAT INPAT_ICD10(O329) Maternal care for malpresentation of fetus, unspecified 23
OUTPAT OUTPAT_ICD10(O3002) Twin pregnancy with a shared amniotic and chorionic sac 23
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O429) Premature rupture of membranes, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 23
OUTPAT OUTPAT_ICD10(O432) Morbidly adherent placenta 22
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O343) Maternal care for cervical incompetence. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 22
OUTPAT OUTPAT_ICD10(O346) Maternal care for abnormality of vagina 21
INPAT INPAT_ICD10(O346) Maternal care for abnormality of vagina 19
OUTPAT OUTPAT_ICD10(O325) Maternal care for multiple gestation with malpresentation of one fetus or more 17
OUTPAT OUTPAT_ICD10(O353) Maternal care for (suspected) damage to fetus from viral disease in mother 17
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O468) Other antepartum haemorrhage. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 15
INPAT INPAT_ICD10(O311) Continuing pregnancy after abortion of one fetus or more 13
OUTPAT OUTPAT_ICD10(O338) Maternal care for disproportion of other origin 13
OUTPAT OUTPAT_ICD10(O431) Malformation of placenta 13
OUTPAT OUTPAT_ICD10(O302) Quadruplet pregnancy 12
OUTPAT OUTPAT_ICD10(O326) Maternal care for compound presentation 12
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O341) Maternal care for tumour of corpus uteri. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 12
INPAT INPAT_ICD10(O3002) Twin pregnancy with a shared amniotic and chorionic sac 11
INPAT INPAT_ICD10(O345) Maternal care for other abnormalities of gravid uterus 11
OUTPAT OUTPAT_ICD10(O308) Other multiple gestation 11
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O344) Maternal care for other abnormalities of cervix. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 11
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O364) Maternal care for intrauterine death. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 11
INPAT INPAT_ICD10(O309) Multiple gestation, unspecified 10
OUTPAT OUTPAT_ICD10(O310) Papyraceous fetus 10
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O44) Placenta praevia. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 10
INPAT INPAT_ICD10(O356) Maternal care for (suspected) damage to fetus by radiation 9
OUTPAT OUTPAT_ICD10(O30) Multiple gestation 9
OUTPAT OUTPAT_ICD10(O367) Maternal care for viable fetus in abdominal pregnancy 9
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O320) Maternal care for unstable lie. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 9
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O369) Maternal care for fetal problem, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 9
OUTPAT OUTPAT_ICD10(O323) Maternal care for face, brow and chin presentation 8
OUTPAT OUTPAT_ICD10(O357) Maternal care for (suspected) damage to fetus by other medical procedures 8
OUTPAT OUTPAT_ICD10(O42) Premature rupture of membranes 8
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O309) Multiple gestation, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 8
INPAT INPAT_ICD10(O431) Malformation of placenta 7
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O359) Maternal care for (suspected) fetal abnormality and damage, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 7
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O421) Premature rupture of membranes, onset of labour after 24 hours. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 7
INPAT INPAT_ICD10(O308) Other multiple gestation 6
INPAT INPAT_ICD10(O337) Maternal care for disproportion due to other fetal deformities 6
INPAT INPAT_ICD10(O367) Maternal care for viable fetus in abdominal pregnancy 6
OUTPAT OUTPAT_ICD10(O337) Maternal care for disproportion due to other fetal deformities 6
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O355) Maternal care for (suspected) damage to fetus by drugs. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 6
OUTPAT OUTPAT_ICD10(O450) Premature separation of placenta with coagulation defect 5
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O328) Maternal care for other malpresentation of fetus. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 5
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O348) Maternal care for other abnormalities of pelvic organs. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 5
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O350) Maternal care for (suspected) central nervous system malformation in fetus. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 5
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(O411) Infection of amniotic sac and membranes. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 5