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O35.07

⚠ Non-billable (Header)

Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly

Pregnancy, childbirth and the puerperium (O00-O9A)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

O35
  • • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

O35.0
  • • chromosomal abnormality in fetus (O35.1-)

Child Codes (7)

O35.07X0Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly, not applicable or unspecifiedO35.07X1Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly, fetus 1O35.07X2Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly, fetus 2O35.07X3Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly, fetus 3O35.07X4Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly, fetus 4O35.07X5Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly, fetus 5O35.07X9Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly, other fetus

Clinical Description

ICD-10-CM code O35.07 represents maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly. This code falls under the Pregnancy, childbirth and the puerperium (O00-O9A) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 6-character code at the 5th level of specificity. There are 7 more specific child codes under O35.07. Coders should note that O35.07 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code O35.07?

ICD-10-CM code O35.07 is "Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly". It belongs to the category: Pregnancy, childbirth and the puerperium (O00-O9A).

Is O35.07 a billable ICD-10 code?

No, O35.07 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with O35.07?

O35.07 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can O35.07 be coded with other codes?

O35.07 has 1 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in O35.0

Other codes in the same category that may be relevant for differential coding:

O35.00Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecifiedO35.01Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosumO35.02Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephalyO35.03Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cystsO35.04Maternal care for (suspected) central nervous system malformation or damage in fetus, encephaloceleO35.05Maternal care for (suspected) central nervous system malformation or damage in fetus, holoprosencephalyO35.06Maternal care for (suspected) central nervous system malformation or damage in fetus, hydrocephalyO35.08Maternal care for (suspected) central nervous system malformation or damage in fetus, spina bifidaO35.09Maternal care for (suspected) other central nervous system malformation or damage in fetus

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Code Information

CodeO35.07
BillableNo — Header code
ParentO35.0
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes11 rule(s)
Excludes21 note(s)
Child codes7

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)