O41.12 Chorioamnionitis

The ICD-10-CM code for Chorioamnionitis is O41.12 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

15: Pregnancy, childbirth and the puerperium (O00-O9A)

Section

O30-O48: Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

Category O41

33 codes (24 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to O41.12:

• Chorioamnionitis
• Triple I
• Infection, infected, infective (opportunistic) › intrauterine inflammation
• Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › chorioamnionitis
• Infection, infected, infective (opportunistic) › amniotic fluid, sac or cavity › chorioamnionitis
• Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › amnionitis
• Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › infection (s) › intrauterine
• Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › inflammation › intrauterine

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool