U.S. ICD-10-CM · FY 2027

O35 ICD-10-CM Code: Maternal care for known or suspected fetal abnormality and damage

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

Maternal care for known or suspected fetal abnormality and damage

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

Classification

Where O35 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

    Code O35

    Maternal care for known or suspected fetal abnormality and damage

More specific choices

Codes under O35

O35 is a non-billable category. Choose the child code that best matches the documented diagnosis.

O35.0

Maternal care for (suspected) central nervous system malformation in fetus

O35.1

Maternal care for (suspected) chromosomal abnormality in fetus

O35.2

Maternal care for (suspected) hereditary disease in fetus

O35.3

Maternal care for (suspected) damage to fetus from viral disease in mother

O35.4

Maternal care for (suspected) damage to fetus from alcohol

O35.5

Maternal care for (suspected) damage to fetus by drugs

O35.6

Maternal care for (suspected) damage to fetus by radiation

O35.7

Maternal care for (suspected) damage to fetus by other medical procedures

O35.8

Maternal care for other (suspected) fetal abnormality and damage

O35.9

Maternal care for (suspected) fetal abnormality and damage, unspecified

O35.A

Maternal care for other (suspected) fetal abnormality and damage, fetal facial anomalies

O35.B

Maternal care for other (suspected) fetal abnormality and damage, fetal cardiac anomalies

O35.C

Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies

O35.D

Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies

O35.E

Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies

O35.F

Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk

O35.G

Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies

O35.H

Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for O35.

Code first

No “code first” instruction is listed for O35.

Use additional code

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

Excludes1

Conditions that should not be reported together with this code.

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

Excludes2

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

No Excludes2 note is listed for O35.

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 mean?

O35 is the FY 2027 U.S. ICD-10-CM code for “Maternal care for known or suspected fetal abnormality and damage.”

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

No. O35 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is O35 located in ICD-10-CM?

O35 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.

What coding notes are listed for O35?

No inclusion terms are listed for O35 in this reference record. No code-first instruction is listed. Excludes1 notes: encounter for suspected maternal and fetal conditions ruled out (Z03.7-). No Excludes2 note is listed.

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