ICD-10-CM category
O41 Other disorders of amniotic fluid and membranes
O41 is a category, not a billable code. Report one of the 168 complete codes below.
O41.0…
28 codes
- O41.00X0Oligohydramnios, unspecified trimester, not applicable or unspecified
- O41.00X1Oligohydramnios, unspecified trimester, fetus 1
- O41.00X2Oligohydramnios, unspecified trimester, fetus 2
- O41.00X3Oligohydramnios, unspecified trimester, fetus 3
- O41.00X4Oligohydramnios, unspecified trimester, fetus 4
- O41.00X5Oligohydramnios, unspecified trimester, fetus 5
- O41.00X9Oligohydramnios, unspecified trimester, other fetus
- O41.01X0Oligohydramnios, first trimester, not applicable or unspecified
- O41.01X1Oligohydramnios, first trimester, fetus 1
- O41.01X2Oligohydramnios, first trimester, fetus 2
- O41.01X3Oligohydramnios, first trimester, fetus 3
- O41.01X4Oligohydramnios, first trimester, fetus 4
- O41.01X5Oligohydramnios, first trimester, fetus 5
- O41.01X9Oligohydramnios, first trimester, other fetus
- O41.02X0Oligohydramnios, second trimester, not applicable or unspecified
- O41.02X1Oligohydramnios, second trimester, fetus 1
- O41.02X2Oligohydramnios, second trimester, fetus 2
- O41.02X3Oligohydramnios, second trimester, fetus 3
- O41.02X4Oligohydramnios, second trimester, fetus 4
- O41.02X5Oligohydramnios, second trimester, fetus 5
- O41.02X9Oligohydramnios, second trimester, other fetus
- O41.03X0Oligohydramnios, third trimester, not applicable or unspecified
- O41.03X1Oligohydramnios, third trimester, fetus 1
- O41.03X2Oligohydramnios, third trimester, fetus 2
- O41.03X3Oligohydramnios, third trimester, fetus 3
- O41.03X4Oligohydramnios, third trimester, fetus 4
- O41.03X5Oligohydramnios, third trimester, fetus 5
- O41.03X9Oligohydramnios, third trimester, other fetus
O41.1…
84 codes
- O41.1010Infection of amniotic sac and membranes, unspecified, first trimester, not applicable or unspecified
- O41.1011Infection of amniotic sac and membranes, unspecified, first trimester, fetus 1
- O41.1012Infection of amniotic sac and membranes, unspecified, first trimester, fetus 2
- O41.1013Infection of amniotic sac and membranes, unspecified, first trimester, fetus 3
- O41.1014Infection of amniotic sac and membranes, unspecified, first trimester, fetus 4
- O41.1015Infection of amniotic sac and membranes, unspecified, first trimester, fetus 5
- O41.1019Infection of amniotic sac and membranes, unspecified, first trimester, other fetus
- O41.1020Infection of amniotic sac and membranes, unspecified, second trimester, not applicable or unspecified
- O41.1021Infection of amniotic sac and membranes, unspecified, second trimester, fetus 1
- O41.1022Infection of amniotic sac and membranes, unspecified, second trimester, fetus 2
- O41.1023Infection of amniotic sac and membranes, unspecified, second trimester, fetus 3
- O41.1024Infection of amniotic sac and membranes, unspecified, second trimester, fetus 4
- O41.1025Infection of amniotic sac and membranes, unspecified, second trimester, fetus 5
- O41.1029Infection of amniotic sac and membranes, unspecified, second trimester, other fetus
- O41.1030Infection of amniotic sac and membranes, unspecified, third trimester, not applicable or unspecified
- O41.1031Infection of amniotic sac and membranes, unspecified, third trimester, fetus 1
- O41.1032Infection of amniotic sac and membranes, unspecified, third trimester, fetus 2
- O41.1033Infection of amniotic sac and membranes, unspecified, third trimester, fetus 3
- O41.1034Infection of amniotic sac and membranes, unspecified, third trimester, fetus 4
- O41.1035Infection of amniotic sac and membranes, unspecified, third trimester, fetus 5
- O41.1039Infection of amniotic sac and membranes, unspecified, third trimester, other fetus
- O41.1090Infection of amniotic sac and membranes, unspecified, unspecified trimester, not applicable or unspecified
- O41.1091Infection of amniotic sac and membranes, unspecified, unspecified trimester, fetus 1
- O41.1092Infection of amniotic sac and membranes, unspecified, unspecified trimester, fetus 2
- O41.1093Infection of amniotic sac and membranes, unspecified, unspecified trimester, fetus 3
- O41.1094Infection of amniotic sac and membranes, unspecified, unspecified trimester, fetus 4
- O41.1095Infection of amniotic sac and membranes, unspecified, unspecified trimester, fetus 5
- O41.1099Infection of amniotic sac and membranes, unspecified, unspecified trimester, other fetus
- O41.1210Chorioamnionitis, first trimester, not applicable or unspecified
- O41.1211Chorioamnionitis, first trimester, fetus 1
- O41.1212Chorioamnionitis, first trimester, fetus 2
- O41.1213Chorioamnionitis, first trimester, fetus 3
- O41.1214Chorioamnionitis, first trimester, fetus 4
- O41.1215Chorioamnionitis, first trimester, fetus 5
- O41.1219Chorioamnionitis, first trimester, other fetus
- O41.1220Chorioamnionitis, second trimester, not applicable or unspecified
- O41.1221Chorioamnionitis, second trimester, fetus 1
- O41.1222Chorioamnionitis, second trimester, fetus 2
- O41.1223Chorioamnionitis, second trimester, fetus 3
- O41.1224Chorioamnionitis, second trimester, fetus 4
- O41.1225Chorioamnionitis, second trimester, fetus 5
- O41.1229Chorioamnionitis, second trimester, other fetus
- O41.1230Chorioamnionitis, third trimester, not applicable or unspecified
- O41.1231Chorioamnionitis, third trimester, fetus 1
- O41.1232Chorioamnionitis, third trimester, fetus 2
- O41.1233Chorioamnionitis, third trimester, fetus 3
- O41.1234Chorioamnionitis, third trimester, fetus 4
- O41.1235Chorioamnionitis, third trimester, fetus 5
- O41.1239Chorioamnionitis, third trimester, other fetus
- O41.1290Chorioamnionitis, unspecified trimester, not applicable or unspecified
- O41.1291Chorioamnionitis, unspecified trimester, fetus 1
- O41.1292Chorioamnionitis, unspecified trimester, fetus 2
- O41.1293Chorioamnionitis, unspecified trimester, fetus 3
- O41.1294Chorioamnionitis, unspecified trimester, fetus 4
- O41.1295Chorioamnionitis, unspecified trimester, fetus 5
- O41.1299Chorioamnionitis, unspecified trimester, other fetus
- O41.1410Placentitis, first trimester, not applicable or unspecified
- O41.1411Placentitis, first trimester, fetus 1
- O41.1412Placentitis, first trimester, fetus 2
- O41.1413Placentitis, first trimester, fetus 3
- O41.1414Placentitis, first trimester, fetus 4
- O41.1415Placentitis, first trimester, fetus 5
- O41.1419Placentitis, first trimester, other fetus
- O41.1420Placentitis, second trimester, not applicable or unspecified
- O41.1421Placentitis, second trimester, fetus 1
- O41.1422Placentitis, second trimester, fetus 2
- O41.1423Placentitis, second trimester, fetus 3
- O41.1424Placentitis, second trimester, fetus 4
- O41.1425Placentitis, second trimester, fetus 5
- O41.1429Placentitis, second trimester, other fetus
- O41.1430Placentitis, third trimester, not applicable or unspecified
- O41.1431Placentitis, third trimester, fetus 1
- O41.1432Placentitis, third trimester, fetus 2
- O41.1433Placentitis, third trimester, fetus 3
- O41.1434Placentitis, third trimester, fetus 4
- O41.1435Placentitis, third trimester, fetus 5
- O41.1439Placentitis, third trimester, other fetus
- O41.1490Placentitis, unspecified trimester, not applicable or unspecified
- O41.1491Placentitis, unspecified trimester, fetus 1
- O41.1492Placentitis, unspecified trimester, fetus 2
- O41.1493Placentitis, unspecified trimester, fetus 3
- O41.1494Placentitis, unspecified trimester, fetus 4
- O41.1495Placentitis, unspecified trimester, fetus 5
- O41.1499Placentitis, unspecified trimester, other fetus
O41.8…
28 codes
- O41.8X10Other specified disorders of amniotic fluid and membranes, first trimester, not applicable or unspecified
- O41.8X11Other specified disorders of amniotic fluid and membranes, first trimester, fetus 1
- O41.8X12Other specified disorders of amniotic fluid and membranes, first trimester, fetus 2
- O41.8X13Other specified disorders of amniotic fluid and membranes, first trimester, fetus 3
- O41.8X14Other specified disorders of amniotic fluid and membranes, first trimester, fetus 4
- O41.8X15Other specified disorders of amniotic fluid and membranes, first trimester, fetus 5
- O41.8X19Other specified disorders of amniotic fluid and membranes, first trimester, other fetus
- O41.8X20Other specified disorders of amniotic fluid and membranes, second trimester, not applicable or unspecified
- O41.8X21Other specified disorders of amniotic fluid and membranes, second trimester, fetus 1
- O41.8X22Other specified disorders of amniotic fluid and membranes, second trimester, fetus 2
- O41.8X23Other specified disorders of amniotic fluid and membranes, second trimester, fetus 3
- O41.8X24Other specified disorders of amniotic fluid and membranes, second trimester, fetus 4
- O41.8X25Other specified disorders of amniotic fluid and membranes, second trimester, fetus 5
- O41.8X29Other specified disorders of amniotic fluid and membranes, second trimester, other fetus
- O41.8X30Other specified disorders of amniotic fluid and membranes, third trimester, not applicable or unspecified
- O41.8X31Other specified disorders of amniotic fluid and membranes, third trimester, fetus 1
- O41.8X32Other specified disorders of amniotic fluid and membranes, third trimester, fetus 2
- O41.8X33Other specified disorders of amniotic fluid and membranes, third trimester, fetus 3
- O41.8X34Other specified disorders of amniotic fluid and membranes, third trimester, fetus 4
- O41.8X35Other specified disorders of amniotic fluid and membranes, third trimester, fetus 5
- O41.8X39Other specified disorders of amniotic fluid and membranes, third trimester, other fetus
- O41.8X90Other specified disorders of amniotic fluid and membranes, unspecified trimester, not applicable or unspecified
- O41.8X91Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 1
- O41.8X92Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 2
- O41.8X93Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 3
- O41.8X94Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 4
- O41.8X95Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 5
- O41.8X99Other specified disorders of amniotic fluid and membranes, unspecified trimester, other fetus
O41.9…
28 codes
- O41.90X0Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, not applicable or unspecified
- O41.90X1Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 1
- O41.90X2Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 2
- O41.90X3Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 3
- O41.90X4Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 4
- O41.90X5Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 5
- O41.90X9Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, other fetus
- O41.91X0Disorder of amniotic fluid and membranes, unspecified, first trimester, not applicable or unspecified
- O41.91X1Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 1
- O41.91X2Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 2
- O41.91X3Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 3
- O41.91X4Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 4
- O41.91X5Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 5
- O41.91X9Disorder of amniotic fluid and membranes, unspecified, first trimester, other fetus
- O41.92X0Disorder of amniotic fluid and membranes, unspecified, second trimester, not applicable or unspecified
- O41.92X1Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 1
- O41.92X2Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 2
- O41.92X3Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 3
- O41.92X4Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 4
- O41.92X5Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 5
- O41.92X9Disorder of amniotic fluid and membranes, unspecified, second trimester, other fetus
- O41.93X0Disorder of amniotic fluid and membranes, unspecified, third trimester, not applicable or unspecified
- O41.93X1Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 1
- O41.93X2Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 2
- O41.93X3Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 3
- O41.93X4Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 4
- O41.93X5Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 5
- O41.93X9Disorder of amniotic fluid and membranes, unspecified, third trimester, other fetus
Outside the US? O41 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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