ICD-10-CM > O00-O9A > O94-O9A > O98 > O98.6 > O98.61 O98.61 Protozoal diseases complicating pregnancy Non-Billable/Non-Specific Codes O98.611Protozoal diseases complicating pregnancy, first trimesterO98.612Protozoal diseases complicating pregnancy, second trimesterO98.613Protozoal diseases complicating pregnancy, third trimesterO98.619Protozoal diseases complicating pregnancy, unspecified trimester