Version 2024

2024 ICD-10-CM Diagnosis Code O41.12

Chorioamnionitis

ICD-10-CM Code:
O41.12
ICD-10 Code for:
Chorioamnionitis
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Pregnancy, childbirth and the puerperium
    (O00-O9A)
    • Maternal care related to the fetus and amniotic cavity and possible delivery problems
      (O30-O48)
      • Other disorders of amniotic fluid and membranes
        (O41)

O41.12 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of chorioamnionitis. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Chorioamnionitis

Non-specific codes like O41.12 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for chorioamnionitis:

  • O41.121 for Chorioamnionitis, first trimester - NON-BILLABLE CODE

  • Use O41.1210 for not applicable or unspecified - BILLABLE CODE

  • Use O41.1211 for fetus 1 - BILLABLE CODE

  • Use O41.1212 for fetus 2 - BILLABLE CODE

  • Use O41.1213 for fetus 3 - BILLABLE CODE

  • Use O41.1214 for fetus 4 - BILLABLE CODE

  • Use O41.1215 for fetus 5 - BILLABLE CODE

  • Use O41.1219 for other fetus - BILLABLE CODE

  • O41.122 for Chorioamnionitis, second trimester - NON-BILLABLE CODE

  • Use O41.1220 for not applicable or unspecified - BILLABLE CODE

  • Use O41.1221 for fetus 1 - BILLABLE CODE

  • Use O41.1222 for fetus 2 - BILLABLE CODE

  • Use O41.1223 for fetus 3 - BILLABLE CODE

  • Use O41.1224 for fetus 4 - BILLABLE CODE

  • Use O41.1225 for fetus 5 - BILLABLE CODE

  • Use O41.1229 for other fetus - BILLABLE CODE

  • O41.123 for Chorioamnionitis, third trimester - NON-BILLABLE CODE

  • Use O41.1230 for not applicable or unspecified - BILLABLE CODE

  • Use O41.1231 for fetus 1 - BILLABLE CODE

  • Use O41.1232 for fetus 2 - BILLABLE CODE

  • Use O41.1233 for fetus 3 - BILLABLE CODE

  • Use O41.1234 for fetus 4 - BILLABLE CODE

  • Use O41.1235 for fetus 5 - BILLABLE CODE

  • Use O41.1239 for other fetus - BILLABLE CODE

  • O41.129 for Chorioamnionitis, unspecified trimester - NON-BILLABLE CODE

  • Use O41.1290 for not applicable or unspecified - BILLABLE CODE

  • Use O41.1291 for fetus 1 - BILLABLE CODE

  • Use O41.1292 for fetus 2 - BILLABLE CODE

  • Use O41.1293 for fetus 3 - BILLABLE CODE

  • Use O41.1294 for fetus 4 - BILLABLE CODE

  • Use O41.1295 for fetus 5 - BILLABLE CODE

  • Use O41.1299 for other fetus - BILLABLE CODE

Clinical Information

  • Chorioamnionitis

    inflammation of the placental membranes (chorion; amnion) and connected tissues such as fetal blood vessels and umbilical cord. it is often associated with intrauterine ascending infections during pregnancy.
  • Chorioamnionitis

    a morphologic finding indicating inflammation of the fetal sac membranes. it is characterized by neutrophilic infiltration of the amnion and chorion.
  • Clinical Chorioamnionitis

    inflammation of the fetal sac membranes, characterized by otherwise unexplained fever (at or above 38 degree c (100.4f)) with one or more of the following: uterine tenderness and/or irritability, leukocytosis, fetal tachycardia, maternal tachycardia, or malodorous vaginal discharge.
  • Histologic Chorioamnionitis|Acute Amnionitis|Acute Chorioamnionitis|Acute Choriodeciduitis|Acute Chorionitis|Microscopic Chorioamnionitis

    inflammation of the fetal sac membranes that is characterized by neutrophilic infiltration of the amnion and chorion.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.