O35

Non-billable

Maternal care for known or suspected fetal abnormality and damage

O35 is the ICD-10-CM code for Maternal care for known or suspected fetal abnormality and damage. It is a non-billable category code — use a more specific child code such as O35.0 for billing.

Status
Header (non-billable)
Chapter
O00-O9A
Subcodes
18
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

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 — not coded here

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

Notes

  • any associated maternal condition

Frequently asked questions

What is ICD-10 code O35?
O35 is the ICD-10-CM code for "Maternal care for known or suspected fetal abnormality and damage". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O35 a billable code?
No — O35 is a non-billable header code. Use a more specific child code (such as O35.0) for billing.
What are the subcodes of O35?
O35 has 18 more specific child codes, including O35.0, O35.1, O35.2.
What is excluded from O35?
Excludes1 (not coded here): encounter for suspected maternal and fetal conditions ruled out (Z03.7-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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