O35.01Header code — not billable

Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum

Short description: Mat care cnsl malf/damag fts, agenesis of corpus callosum

Chapter
15. Pregnancy, childbirth and the puerperium
Category
O35
Effective date
October 1, 2026

Related codes in category O35

O35Maternal care for known or suspected fetal abnlt and damageO35.0Maternal care for (suspected) cnsl malformation in fetusO35.00Mat care (suspected) cnsl malf/damag fts, unspecifiedO35.00X0Mat care (suspected) cnsl malf/damag fts, unspecified, unspYesO35.00X1Mat care cnsl malf/damag fts, unspecified, fetus 1YesO35.00X2Mat care cnsl malf/damag fts, unspecified, fetus 2YesO35.00X3Mat care cnsl malf/damag fts, unspecified, fetus 3YesO35.00X4Mat care cnsl malf/damag fts, unspecified, fetus 4YesO35.00X5Mat care cnsl malf/damag fts, unspecified, fetus 5YesO35.00X9Mat care cnsl malf/damag fts, unspecified, other fetusYesO35.01X0Mat care cnsl malf/damag fts, agenesis corpus callosum, unspYesO35.01X1Mat care cnsl malf/damag fts, agenesis corpus callosum, fts1Yes

Frequently asked questions

What is ICD-10 code O35.01?

O35.01 is an ICD-10-CM diagnosis code for Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum.

Is O35.01 a billable code?

No. O35.01 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is O35.01 in?

O35.01 falls under Chapter 15: Pregnancy, childbirth and the puerperium.

When did O35.01 become effective?

O35.01 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to O35.01?

O35.01 belongs to category O35, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.