ICD-9-CM diagnosis code (retired)
658.43 — Infection of amniotic cavity, antepartum condition or complication
About ICD-9-CM 658.43
658.43 is an ICD-9-CM diagnosis code for infection of amniotic cavity, antepartum condition or complication. 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 9 ICD-10-CM codes, such as O41.1010 (Infection of amniotic sac and membranes, unspecified, first trimester, not applicable or unspecified), O41.1020 (Infection of amniotic sac and membranes, unspecified, second trimester, not applicable or unspecified) and O41.1030 (Infection of amniotic sac and membranes, unspecified, third trimester, not applicable or unspecified). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- O41.1010Infection of amniotic sac and membranes, unspecified, first trimester, not applicable or unspecifiedapproximate
- O41.1020Infection of amniotic sac and membranes, unspecified, second trimester, not applicable or unspecifiedapproximate
- O41.1030Infection of amniotic sac and membranes, unspecified, third trimester, not applicable or unspecifiedapproximate
- O41.1210Chorioamnionitis, first trimester, not applicable or unspecifiedapproximate
- O41.1220Chorioamnionitis, second trimester, not applicable or unspecifiedapproximate
- O41.1230Chorioamnionitis, third trimester, not applicable or unspecifiedapproximate
- O41.1410Placentitis, first trimester, not applicable or unspecifiedapproximate
- O41.1420Placentitis, second trimester, not applicable or unspecifiedapproximate
- O41.1430Placentitis, third trimester, not applicable or unspecifiedapproximate
Common questions about 658.43
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.