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U.S. ICD-10-CM · FY 2027

O35.03X1 ICD-10-CM Code: Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts, fetus 1

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

O35.03X1

Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts, fetus 1

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where O35.03X1 sits

  1. 1

    Chapter 15

    Pregnancy, childbirth and the puerperium (O00-O9A)

  2. 2

    Section

    Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

  3. 3

    Category O35

    Maternal care for known or suspected fetal abnormality and damage

  4. 4

    Subcategory O35.03

    Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts

  5. 5

    Code O35.03X1

    Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts, fetus 1

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for O35.03X1.

Code first

No “code first” instruction is listed for O35.03X1.

Use additional code

No “use additional code” instruction is listed for O35.03X1.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for O35.03X1.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for O35.03X1.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code O35.03X1 mean?

O35.03X1 is the FY 2027 U.S. ICD-10-CM code for “Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts, fetus 1.”

Is O35.03X1 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, O35.03X1 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is O35.03X1 located in ICD-10-CM?

O35.03X1 is listed in Chapter 15, Pregnancy, childbirth and the puerperium (O00-O9A), within Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48) (O30–O48), under category O35, Maternal care for known or suspected fetal abnormality and damage and subcategory O35.03, Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts.

What coding notes are listed for O35.03X1?

No inclusion terms are listed for O35.03X1 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

Keep exploring

Related O35.03 codes

O35.03X0

Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts, not applicable or unspecified

O35.03X2

Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts, fetus 2

O35.03X3

Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts, fetus 3

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