2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Complications Of Pregnancy, Childbirth, And The Puerperium 630-677 > Ectopic And Molar Pregnancy And Other Pregnancy With Abortive Outcome 630-639 > Ectopic Pregnancy 633.* > 2006 ICD-9-CM Diagnosis 633.0 Abdominal pregnancy View the most recent version of ICD-9-CM 633.0 A type of ectopic pregnancy in which the embryo implants in the abdominal cavity instead of the uterine endometrium. 633.0 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 633.* hierarchy Alternate Terminology Intraperitoneal pregnancy