658.91 — Unspecified problem associated with amniotic cavity and membranes, delivered, with or without mention of antepartum condition

658.91 is an ICD-9-CM diagnosis code for unspecified problem associated with amniotic cavity and membranes, 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 3 ICD-10-CM codes, such as O41.91X0 (Disorder of amniotic fluid and membranes, unspecified, first trimester, not applicable or unspecified), O41.92X0 (Disorder of amniotic fluid and membranes, unspecified, second trimester, not applicable or unspecified) and O41.93X0 (Disorder of amniotic fluid and membranes, unspecified, third trimester, not applicable or unspecified). All of these are approximate matches, so review the record to pick the right one.