| Groups | Level 1 | Level 2 |
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| 0 | INFECTION | 02 MALARIA 04 SYPHILIS 05 GROUP B STREPTOCOCCUS (GBS) 06 COMMON BACTERIA OF MATERNAL FLORA (NON-GBS) |
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| 1 | NEONATAL | 11 EXTREME PREMATURITY 13 CARDIO-RESPIRATORY 19 INFECTION |
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| 2 | INTRAPARTUM | 23 MALPRESENTATION 25 PROLONGED/OBSTRUCTED OR INCOMPLETE LABOR 26 EXTREME PREMATURITY 29 UNKNOWN (FETAL RESPIRATORYFAILURE/ASPHYXIA) |
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| 3 | CONGENITAL ANOMALY | 31 CENTRAL NERVOUS SYSTEM 32 CARDIOVASCULAR AND LYMPHATIC VESSELS 37 TRISOMIES |
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| 4 | FETAL | 43 ALLOIMMUNIZATION 47 HYDROPS OF UNKNOWN ORIGIN |
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5 | CORD | 51 KNOTS 52 LOOPS 53 ABNORMAL INSERTION |
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| 6 | PLACENTA | 63 ABRUPTION 64 INFARCTIONS AND THROMBI |
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| 7 | MATERNAL | 71 HYPERTENSIVE DISORDER 73 DIABETES 79 INFECTION |
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| 8 | UNKNOWN | 81 UNKNOWN 85 UNEXPLAINED 86 UNCLASSIFIABLE | 8) ASSOCIATED PERINATAL | 81 SMALL FOR GESTATIONAL AGE 83 MULTIPLES 87 OVER-TERM 89 SUBOPTIMAL CARE |
| 9 | TERMINATION | 91 FOR CONG. ANOMALY 94 FOR FETAL DISEASE 96 FOR MATERNAL CONDITION | 9) ASSOCIATED MATERNAL | 91 OBSTETRIC HISTORY 92 SMOKING 95 POVERTY |