U.S. ICD-10-CM · FY 2027

O31 ICD-10-CM Code: Complications specific to multiple gestation

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

Complications specific to multiple gestation

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

Classification

Where O31 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

    Code O31

    Complications specific to multiple gestation

More specific choices

Codes under O31

O31 is a non-billable category. Choose the child code that best matches the documented diagnosis.

O31.0

Papyraceous fetus

O31.1

Continuing pregnancy after spontaneous abortion of one fetus or more

O31.2

Continuing pregnancy after intrauterine death of one fetus or more

O31.3

Continuing pregnancy after elective fetal reduction of one fetus or more

O31.4

Continuing pregnancy after vanishing twin syndrome of one fetus or more

O31.8

Other complications specific to multiple gestation

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for O31.

Code first

No “code first” instruction is listed for O31.

Use additional code

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

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for O31.

Excludes2

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

  • delayed delivery of second twin, triplet, etc. (O63.2)
  • malpresentation of one fetus or more (O32.9)
  • placental transfusion syndromes (O43.0-)

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 mean?

O31 is the FY 2027 U.S. ICD-10-CM code for “Complications specific to multiple gestation.”

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

No. O31 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 O31 located in ICD-10-CM?

O31 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.

What coding notes are listed for O31?

No inclusion terms are listed for O31 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: delayed delivery of second twin, triplet, etc. (O63.2); malpresentation of one fetus or more (O32.9); placental transfusion syndromes (O43.0-).

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