O31.41 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester
ICD-10-CM 2027 diagnosis code · Maternal care related to the fetus and amniotic cavity and possible delivery problems
- Code
O31.41(claims format:O3141)- Description
- Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester
- Short description
- Cont preg aft vanishing twin syn of one fts or more, 1st tri
- Billable
- No – use a more specific code below
- 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
- O31 › O31.4
Billable codes under O31.41
O31.41 is a header code and cannot be used on claims. Choose the most specific code:
- O31.41X0 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, not applicable or unspecifiedBillable · New in 2027
- O31.41X1 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 1Billable · New in 2027
- O31.41X2 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 2Billable · New in 2027
- O31.41X3 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 3Billable · New in 2027
- O31.41X4 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 4Billable · New in 2027
- O31.41X5 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 5Billable · New in 2027
- O31.41X9 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, other fetusBillable · New in 2027
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| 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.
O31 – Complications specific to multiple gestation
- One of the following 7th characters is to be assigned to each code under category O31. 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 O31 that has a 7th character of 1 through 9.
Related codes in O31.4
- O31.40 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimesterHeader
- O31.42 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimesterHeader
- O31.43 – Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimesterHeader
Frequently asked questions
What is ICD-10 code O31.41?
O31.41 is the ICD-10-CM code for continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, in the block O30-O48 (Maternal care related to the fetus and amniotic cavity and possible delivery problems).
Is O31.41 a billable code?
No. O31.41 is a header code with more specific child codes; report one of the billable codes listed above.
What category does O31.41 belong to?
It belongs to category O31 – Complications specific to multiple gestation.
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.