O41.1220 – Chorioamnionitis, second trimester, not applicable or unspecified
ICD-10-CM 2027 diagnosis code · Maternal care related to the fetus and amniotic cavity and possible delivery problems
- Code
O41.1220(claims format:O411220)- Description
- Chorioamnionitis, second trimester, not applicable or unspecified
- Short description
- Chorioamnionitis, second trimester, not applicable or unsp
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 15. Pregnancy, childbirth and the puerperium (O00-O9A)
- Block
- O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems
- Parent codes
- O41 › O41.1 › O41.12 › O41.122
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care.
| Character | Meaning |
|---|---|
0 | not applicable or unspecified |
1 | fetus 1 |
2 | fetus 2 |
3 | fetus 3 |
4 | fetus 4 |
5 | fetus 5 |
9 | other fetus |
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
O41 – Other disorders of amniotic fluid and membranes
- encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
- One of the following 7th characters is to be assigned to each code under category O41. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O41 that has a 7th character of 1 through 9.
Related codes in O41.122
- O41.1221 – Chorioamnionitis, second trimester, fetus 1Billable
- O41.1222 – Chorioamnionitis, second trimester, fetus 2Billable
- O41.1223 – Chorioamnionitis, second trimester, fetus 3Billable
- O41.1224 – Chorioamnionitis, second trimester, fetus 4Billable
- O41.1225 – Chorioamnionitis, second trimester, fetus 5Billable
- O41.1229 – Chorioamnionitis, second trimester, other fetusBillable
Frequently asked questions
What is ICD-10 code O41.1220?
O41.1220 is the ICD-10-CM code for chorioamnionitis, second trimester, not applicable or unspecified, in the block O30-O48 (Maternal care related to the fetus and amniotic cavity and possible delivery problems).
Is O41.1220 a billable code?
Yes. O41.1220 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does O41.1220 belong to?
It belongs to category O41 – Other disorders of amniotic fluid and membranes.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.