O41.122
⚠ Non-billable
Chorioamnionitis, second trimester
ICD-10-CM · FY2026 · Pregnancy, Childbirth and the Puerperium
Code
O41.122
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Pregnancy, Childbirth and the Puerperium
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code O41.122?
ICD-10-CM code O41.122 represents Chorioamnionitis, second trimester. It is a non-billable header code requiring a more specific subcategory in the Pregnancy, Childbirth and the Puerperium chapter, effective October 1, 2025 – September 30, 2026.
Is O41.122 billable?
No. O41.122 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is O41.122 in?
O41.122 belongs to the Pregnancy, Childbirth and the Puerperium chapter (O00–O9A) of ICD-10-CM.
Related codes in the O41 category
O41
Other disorders of amniotic fluid and membranes
Non-billable
O41.0
Oligohydramnios
Non-billable
O41.1
Infection of amniotic sac and membranes
Non-billable
O41.8
Other specified disorders of amniotic fluid and membranes
Non-billable
O41.9
Disorder of amniotic fluid and membranes, unspecified
Non-billable
O41.00
Oligohydramnios, unspecified trimester
Non-billable
O41.01
Oligohydramnios, first trimester
Non-billable
O41.02
Oligohydramnios, second trimester
Non-billable
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