O35.12
Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18
- Release
- FY 2027
- Effective
Hierarchy
Where O35.12 sits in the official hierarchy. Each level is the code it is classified under.
- O35 Maternal care for known or suspected fetal abnormality and damage
- O35.1 Parent Maternal care for (suspected) chromosomal abnormality in fetus
- O35.12 This code Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Includes
the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
Inclusion Terms
Maternal care for (suspected) chromosomal abnormality in fetus, Edwards syndrome
Code Also
any associated maternal condition
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
One of the following 7th characters is to be assigned to each code under category O35. 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 O35 that has a 7th character of 1 through 9.
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
0 - not applicable or unspecified
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
1 - fetus 1
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
2 - fetus 2
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
3 - fetus 3
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
4 - fetus 4
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
5 - fetus 5
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
7th Character
9 - other fetus
Inherited from O35 — Maternal care for known or suspected fetal abnormality and damage
More Specific Codes
7 codes under O35.12
- O35.12X0 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18, not applicable or unspecified Billable
- O35.12X1 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18, fetus 1 Billable
- O35.12X2 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18, fetus 2 Billable
- O35.12X3 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18, fetus 3 Billable
- O35.12X4 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18, fetus 4 Billable
- O35.12X5 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18, fetus 5 Billable
- O35.12X9 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18, other fetus Billable
Version History
How O35.12 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentMaternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18
-
FY 2026 Effective
UnchangedMaternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18
Related Codes
Other codes under O35.1
- O35.10 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified
- O35.11 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 13
- O35.13 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21
- O35.14 Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome
- O35.15 Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality
- O35.19 Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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