ICD-10-CM > O00-O9A > O20-O29 > O26 > O26.8 > O26.85 O26.85 Spotting complicating pregnancy Non-Billable/Non-Specific Codes O26.851Spotting complicating pregnancy, first trimesterO26.852Spotting complicating pregnancy, second trimesterO26.853Spotting complicating pregnancy, third trimesterO26.859Spotting complicating pregnancy, unspecified trimester