Table 1.

Classifications and coding for causes of PPH

Cause of PPH	ICD-9 coding	ICD-10 Coding	Scottish data classification
Third stage hemorrhage (Postpartum hemorrhage due to retained placenta)	666.0	O72.0	Hemorrhage due to retained products
Other immediate postpartum hemorrhage, within the first 24 hours following delivery of placenta (Uterine atony)	666.1	O72.1	Hemorrhage due to uterine atony
Delayed and secondary postpartum hemorrhage (after the first 24 hours following delivery)	666.2	O72.2
Postpartum coagulation defects	666.3	O72.3
Other causes			Hemorrhage due to placental abruption, placenta previa, trauma or other causes