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v1.0.0
ICD-10 Guide
ICD-10 CodesO31.10

O31.10

Billable

Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester

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

Code Description

ICD-10 O31.10 is a billable code used to indicate a diagnosis of continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester.

Key Diagnostic Point:

This code is used to indicate a continuing pregnancy following a spontaneous abortion of one or more fetuses, where the specific trimester is not defined. In cases of multiple gestation, the risk of complications increases significantly. One notable complication is twin-to-twin transfusion syndrome (TTTS), which occurs when blood flow between twins is imbalanced due to shared placental circulation. This condition can lead to serious outcomes for both fetuses, including growth discrepancies, heart failure, and even fetal demise. The management of pregnancies complicated by TTTS often requires specialized monitoring and intervention, such as laser therapy to correct the vascular imbalance. Accurate coding of O31.10 is crucial for tracking maternal and fetal outcomes and ensuring appropriate care is provided throughout the pregnancy.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiating between spontaneous abortion and other types of pregnancy loss.
  • Identifying and documenting complications specific to multiple gestations.
  • Understanding the implications of twin-to-twin transfusion syndrome.
  • Navigating the nuances of unspecified trimester coding.

Audit Risk Factors

  • Inadequate documentation of the spontaneous abortion event.
  • Failure to document the presence of multiple gestations.
  • Lack of clarity regarding the management of complications like TTTS.
  • Incorrect coding of trimester status.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed records of pregnancy history, including any previous losses and current complications.

Common Clinical Scenarios

Management of pregnancies following spontaneous abortion, monitoring for complications in multiple gestations.

Billing Considerations

Attention to the specific risks associated with multiple gestations and the need for specialized care.

Maternal-Fetal Medicine

Documentation Requirements

Comprehensive documentation of high-risk factors, including maternal health and fetal assessments.

Common Clinical Scenarios

Management of twin pregnancies, especially those affected by TTTS.

Billing Considerations

Focus on advanced imaging and intervention strategies for managing complications.

Coding Guidelines

Inclusion Criteria

Use O31.10 When
  • Follow official ICD
  • CM guidelines for obstetric coding, ensuring accurate documentation of the pregnancy outcome and any complications
  • Specific criteria for multiple gestation and complications must be met

Exclusion Criteria

Do NOT use O31.10 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

76801CPT Code

Ultrasound, pregnant uterus, transabdominal, real-time with image documentation

Clinical Scenario

Used for monitoring pregnancies complicated by spontaneous abortion and TTTS.

Documentation Requirements

Document the reason for ultrasound and findings related to fetal health.

Specialty Considerations

Obstetricians should ensure detailed reports are available for coding.

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, improving the ability to track outcomes and complications in pregnancies, particularly those involving multiple gestations.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, improving the ability to track outcomes and complications in pregnancies, particularly those involving multiple gestations.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, improving the ability to track outcomes and complications in pregnancies, particularly those involving 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 should be documented to support the use of code O31.10?

Documentation should include details of the spontaneous abortion, the current status of the pregnancy, any complications such as TTTS, and the management plan. Clear records of fetal monitoring and maternal health assessments are essential.