ICD-10-CM > O00-O9A > O94-O9A > O99 > O99.0 O99.0 Anemia complicating pregnancy, childbirth and the puerperium Non-Billable/Non-Specific Applicable To Conditions in D50-D64 Type 1 Excludes anemia arising in the puerperium (O90.81)postpartum anemia NOS (O90.81) Codes O99.01Anemia complicating pregnancyO99.011Anemia complicating pregnancy, first trimesterO99.012Anemia complicating pregnancy, second trimesterO99.013Anemia complicating pregnancy, third trimesterO99.019Anemia complicating pregnancy, unspecified trimesterO99.02Anemia complicating childbirthO99.03Anemia complicating the puerperium