ICD10

ICD-10 Code O31.1: Continuing pregnancy after spontaneous abortion of one fetus or more

O31.1 is an ICD-10 diagnosis entry used to group records related to Continuing pregnancy after spontaneous abortion of one fetus or more. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

When is it used?

  • May be used when a clinician documents continuing pregnancy after spontaneous abortion of one fetus or more in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
  • This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter
15Pregnancy, childbirth and the puerperium (O00-O9A)
block
O30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems
category
O31Complications specific to multiple gestation
currentO31

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

ObstetricianGynecologist

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
O31.1
Replacement codes
O31.10 — Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimesterO31.11 — Continuing pregnancy after spontaneous abortion of one fetus or more, first trimesterO31.12 — Continuing pregnancy after spontaneous abortion of one fetus or more, second trimesterO31.13 — Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester

Common synonyms

Continuing pregnancy after spontaneous abortion of one fetus or more

Frequently asked questions

Code details

CodeO31.1
SystemICD10
Display nameContinuing pregnancy after spontaneous abortion of one fetus or more
ChapterPregnancy, childbirth and the puerperium (O00-O9A)
BlockMaternal care related to the fetus and amniotic cavity and possible delivery problems

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.