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ICD-10 diagnosis code

O41.1 Infection of amniotic sac and membranes

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O41.1 is the ICD-10 code for Infection of amniotic sac and membranes. It is a four-character subcategory of O41 (Other disorders of amniotic fluid and membranes), the most specific level in the WHO edition. It belongs to the block O30–O48 (Maternal care related to the fetus and amniotic cavity and possible delivery problems) in Chapter XV, Pregnancy, childbirth and the puerperium.

Code type
Subcategory (4 characters)
Chapter
XV · O00–O99
Classification
WHO ICD-10, 2019 version

What O41.1 includes

Conditions and terms that are coded here.

  • Amnionitis
  • Chorioamnionitis
  • Membranitis
  • Placentitis

O41.1 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

O41.1Infektion av fostervattenhåla och fosterhinnor

NorwayICD-10-NO

O41.1Infeksjon i amnion og fosterhinner

DenmarkICD-10-DK

DO411Infektion i amnionhule og fosterhinder

  • DO411AAmnionitis
  • DO411BChorioamnionitis
  • DO411CMembranitis amnii
  • DO411DPlacentitis
FinlandICD-10-FI

O41.1Lapsivesipussin ja sikiökalvojen infektio

GermanyICD-10-GM

O41.1Infektion der Fruchtblase und der Eihäute

FranceICD-10-FR

O41.1Infection du sac amniotique et des membranes

NetherlandsICD-10-NL

O41.1infectie van vruchtzak en vliezen

United StatesICD-10-CM

Listed through more specific 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
  • and 76 more national subcodes

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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