ICD-10-CM > O00-O9A > O94-O9A > O9A > O9A.1 > O9A.11 O9A.11 Malignant neoplasm complicating pregnancy Non-Billable/Non-Specific Codes O9A.111Malignant neoplasm complicating pregnancy, first trimesterO9A.112Malignant neoplasm complicating pregnancy, second trimesterO9A.113Malignant neoplasm complicating pregnancy, third trimesterO9A.119Malignant neoplasm complicating pregnancy, unspecified trimester