647.91 — Unspecified infection or infestation of mother, delivered, with or without mention of antepartum condition

647.91 is an ICD-9-CM diagnosis code for unspecified infection or infestation of mother, delivered, with or without mention of antepartum condition. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.

The CMS General Equivalence Mappings translate it to 4 ICD-10-CM codes, such as O98.911 (Unspecified maternal infectious and parasitic disease complicating pregnancy, first trimester), O98.912 (Unspecified maternal infectious and parasitic disease complicating pregnancy, second trimester) and O98.913 (Unspecified maternal infectious and parasitic disease complicating pregnancy, third trimester). All of these are approximate matches, so review the record to pick the right one.