ICD-10-CM › O00-O9A › O30-O48 › O35.1 Maternal care for (suspected)... › O35.13

O35.13

Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2023 onwards. It has never been valid for submission on its own.

Submit one of these 7 more specific codes instead:

  • O35.13X0 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, not applicable or unspecified
  • O35.13X1 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, fetus 1
  • O35.13X2 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, fetus 2
  • O35.13X3 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, fetus 3
  • O35.13X4 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, fetus 4
  • O35.13X5 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, fetus 5
  • O35.13X9 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, other fetus

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2023 to now.

  1. FY2023 Added to the code set Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from O35 Maternal care for known or suspected fetal abnormality and damage

Seventh character required

  • 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.

Excludes1 - never coded here

  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

Code also

  • any associated maternal condition

Includes

  • the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
O35.10 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified Not billable
O35.11 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 13 Not billable
O35.12 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18 Not billable
O35.14 Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome Not billable
O35.15 Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality Not billable
O35.19 Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality Not billable
O35.1XX0 Maternal care for (suspected) chromosomal abnormality in fetus, not applicable or unspecified Retired
O35.1XX1 Maternal care for (suspected) chromosomal abnormality in fetus, fetus 1 Retired
O35.1XX2 Maternal care for (suspected) chromosomal abnormality in fetus, fetus 2 Retired
O35.1XX3 Maternal care for (suspected) chromosomal abnormality in fetus, fetus 3 Retired
O35.1XX4 Maternal care for (suspected) chromosomal abnormality in fetus, fetus 4 Retired
O35.1XX5 Maternal care for (suspected) chromosomal abnormality in fetus, fetus 5 Retired