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U.S. ICD-10-CM · FY 2027

O31.33X9 ICD-10-CM Code: Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, other fetus

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

Code definition

Official description

O31.33X9

Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, other fetus

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

Classification

Where O31.33X9 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 O31

    Complications specific to multiple gestation

  4. 4

    Subcategory O31.33

    Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester

  5. 5

    Code O31.33X9

    Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, other fetus

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for O31.33X9.

Code first

No “code first” instruction is listed for O31.33X9.

Use additional code

No “use additional code” instruction is listed for O31.33X9.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for O31.33X9.

Excludes2

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

No Excludes2 note is listed for O31.33X9.

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 O31.33X9 mean?

O31.33X9 is the FY 2027 U.S. ICD-10-CM code for “Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, other fetus.”

Is O31.33X9 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, O31.33X9 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 O31.33X9 located in ICD-10-CM?

O31.33X9 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 O31, Complications specific to multiple gestation and subcategory O31.33, Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester.

What coding notes are listed for O31.33X9?

No inclusion terms are listed for O31.33X9 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

Keep exploring

Related O31.33 codes

O31.33X0

Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, not applicable or unspecified

O31.33X1

Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 1

O31.33X2

Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 2

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