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ICD-10 Guide
ICD-10 CodesO31.31

O31.31

Billable

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

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/08/2025

Code Description

ICD-10 O31.31 is a billable code used to indicate a diagnosis of continuing pregnancy after elective fetal reduction of one fetus or more, first trimester.

Key Diagnostic Point:

O31.31 is used to indicate a continuing pregnancy following an elective fetal reduction procedure performed during the first trimester. This procedure is often considered in cases of multiple gestation, where the risk of complications increases with the number of fetuses. Elective fetal reduction aims to decrease the number of fetuses to improve outcomes for the remaining fetus or fetuses. Complications specific to multiple gestation, such as twin-to-twin transfusion syndrome (TTTS), can arise, where blood flow between twins is imbalanced, leading to one twin receiving too much blood and the other too little. This condition can result in significant morbidity and mortality if not managed appropriately. The ongoing management of a pregnancy after fetal reduction requires careful monitoring and may involve additional interventions to ensure the health of the remaining fetus or fetuses. Coders must be aware of the complexities involved in documenting the reasons for fetal reduction, the gestational age at the time of the procedure, and any subsequent complications that may arise during the pregnancy.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Need for precise documentation of the fetal reduction procedure and its indications.
  • Management of complications related to multiple gestation, such as TTTS.
  • Differentiation between elective and non-elective fetal reductions.
  • Tracking the gestational age accurately post-reduction.

Audit Risk Factors

  • Inadequate documentation of the reasons for fetal reduction.
  • Failure to document complications arising from multiple gestation.
  • Misclassification of elective versus non-elective fetal reduction.
  • Lack of follow-up documentation on the health of the remaining fetus or fetuses.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Documentation must include details of the fetal reduction procedure, indications, and any complications encountered during the pregnancy.

Common Clinical Scenarios

Management of pregnancies with multiple gestations, monitoring for complications such as TTTS, and counseling patients on risks and benefits of fetal reduction.

Billing Considerations

Coders must ensure that all aspects of the procedure and subsequent care are documented to support the coding choice.

Maternal-Fetal Medicine

Documentation Requirements

High-risk pregnancy documentation must include detailed assessments of fetal health, interventions, and outcomes.

Common Clinical Scenarios

Complex cases involving TTTS, monitoring for growth discrepancies, and planning for potential interventions.

Billing Considerations

Considerations for high-risk coding include the need for multidisciplinary care and the potential for additional procedures.

Coding Guidelines

Inclusion Criteria

Use O31.31 When
  • According to official coding guidelines, O31
  • 31 should be used when a pregnancy continues after an elective fetal reduction in the first trimester
  • Coders must ensure that the documentation supports the use of this code, including the gestational age at the time of the reduction and any complications that arise

Exclusion Criteria

Do NOT use O31.31 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

59000CPT Code

Ultrasound, pregnant uterus, transabdominal

Clinical Scenario

Used for monitoring the remaining fetus after fetal reduction.

Documentation Requirements

Documentation must include the reason for the ultrasound and findings related to the remaining fetus.

Specialty Considerations

Obstetricians must ensure that the ultrasound findings are clearly linked to the ongoing management of the pregnancy.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, including elective fetal reduction. This specificity helps in better tracking of outcomes and complications associated with multiple gestations.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, including elective fetal reduction. This specificity helps in better tracking of outcomes and complications associated with multiple gestations.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, including elective fetal reduction. This specificity helps in better tracking of outcomes and complications associated with multiple gestations.

Resources

Clinical References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Coding & Billing References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Frequently Asked Questions

What is the significance of coding O31.31?

Coding O31.31 is significant as it reflects the ongoing management of a pregnancy after elective fetal reduction, which can have implications for maternal and fetal health. Accurate coding ensures appropriate care and resource allocation.