Special Report on Maternal Mortality and Severe Morbidity in Canada Enhanced Surveillance: The Path to Prevention

Appendix B.

Diagnostic and Procedure Codes Used in the Analysis of Severe Maternla Morbidity

International Classification of Diseases, Ninth Revision (ICD-9) Codes

1. Amniotic fluid embolism (AFE):673.1
2. Obstetrical pulmonary embolism (not including AFE): 673.0, 673.2, 673.3, 673.8
3. Eclampsia: 642.6
4. Shock (obstetrical, septic and other): 669.1, 785.5, 998.0
5. Pulmonary, cardiac and central nervous system (CNS) complications of anaesthesia: 668.0, 668.1, 668.2
6. Cerebrovascular disorders in the puerperium (including intra-cranial venous sinus thrombosis): 674.0, 671.5, 430-434, 436, 437
7. Uterine rupture: 665.0, 665.1
8. Adult respiratory distress syndrome: 518.5, 518.81, 518.82
9. Pulmonary edema: 518.4, 428.1
10. Myocardial infarction: 410, 411
11. Post-partum hemorrhage requiring hysterectomy/transfusion:* 666.0, 666.1, 666.2, 666.3
12. Acute renal failure following labour and delivery: 669.3
13. Cardiac arrest/failure or cerebral anoxia following obstetrical surgery: 669.4

Canadian Classification of Diagnostic,Therapeutic and Surgical Proceudres (CCP) Codes

1. Ventilation: 13.62, 13.63
2. Transfusion (whole blood, packed cells): 13.03, 13.04
3. Abdominal hysterectomy: 80.2, 80.3

*Used in conjunction with CCP codes for transfusion or abdominal hysterectomy.

Appendix C.

List of Acronyms

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