O35.1 Maternal care for (suspected) chromosomal abnormality in fetus

Non-billable header with 7 child codes.

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

Includes

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

Excludes1 (never code together)

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

Code also

• any associated maternal condition

7th character note

• 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.

7th character required

• 0 — not applicable or unspecified
• 1 — fetus 1
• 2 — fetus 2
• 3 — fetus 3
• 4 — fetus 4
• 5 — fetus 5
• 9 — other fetus

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
• O35.12 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18
• 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

Code annotations containing back-references to O35.1

Back-references to O35.1

• Type 2 Excludes: O35.0 Maternal care for (suspected) central nervous system malformation in fetus ("chromosomal abnormality in fetus (O35.1-)")
• Type 2 Excludes: O35.2 Maternal care for (suspected) hereditary disease in fetus ("chromosomal abnormality in fetus (O35.1-)")

Back-references to O35

• Type 2 Excludes: O98 Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium ("when the reason for maternal care is that the disease is known or suspected to have affected the fetus (O35-O36)")
• Type 2 Excludes: O99 Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium ("when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)")
• Type 1 Excludes: Z03.7 Encounter for suspected maternal and fetal conditions ruled out ("known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)")

Nearby codes

• O35.09X2 Maternal care for (suspected) other central nervous system malformation or damage in fetus, fetus 2
• O35.09X3 Maternal care for (suspected) other central nervous system malformation or damage in fetus, fetus 3
• O35.09X4 Maternal care for (suspected) other central nervous system malformation or damage in fetus, fetus 4
• O35.09X5 Maternal care for (suspected) other central nervous system malformation or damage in fetus, fetus 5
• O35.09X9 Maternal care for (suspected) other central nervous system malformation or damage in fetus, other fetus
• O35.1 Maternal care for (suspected) chromosomal abnormality in fetus (this code)
• O35.10 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified
• O35.10X0 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified, not applicable or unspecified
• O35.10X1 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified, fetus 1
• O35.10X2 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified, fetus 2
• O35.10X3 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified, fetus 3