O96.0 exists in the World Health Organization's base ICD-10 classification, but was never adopted into ICD-10-CM (the United States clinical modification used for medical billing). It cannot be used on a US claim. Reference information from the official WHO classification is shown below.
Code
O96.0
Title
Death from direct obstetric cause occurring more than 42 days but less than one year after delivery
Source: WHO ICD-10 (International Statistical Classification of Diseases and Related Health Problems, 10th Revision)