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ICD-10 Guide
ICD-10 CodesO15.9

O15.9

Billable

Eclampsia, unspecified as to time period

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

Code Description

ICD-10 O15.9 is a billable code used to indicate a diagnosis of eclampsia, unspecified as to time period.

Key Diagnostic Point:

Eclampsia is a severe complication of pregnancy characterized by the onset of seizures in a woman with preeclampsia, which is marked by hypertension and proteinuria. The seizures can occur before, during, or after delivery, and the exact timing can significantly impact management and outcomes. Eclampsia can lead to serious maternal and fetal complications, including neurological damage, placental abruption, and fetal distress. Management typically involves stabilization of the mother, seizure control with medications such as magnesium sulfate, and often an emergency delivery if the condition is severe. The unpredictability of seizure onset and the potential for rapid deterioration in maternal and fetal health make eclampsia a critical condition requiring immediate medical attention. Accurate coding is essential for proper treatment documentation and reimbursement, as well as for tracking maternal morbidity and mortality rates associated with this condition.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiating between eclampsia and other seizure disorders
  • Determining the timing of seizures in relation to pregnancy stages
  • Managing co-existing conditions such as hypertension
  • Documenting the severity and frequency of seizures

Audit Risk Factors

  • Inadequate documentation of seizure activity
  • Failure to specify the timing of eclampsia in relation to delivery
  • Misclassification of eclampsia severity
  • Lack of supporting documentation for emergency interventions

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed records of maternal vital signs, seizure activity, and response to treatment are essential.

Common Clinical Scenarios

Management of a pregnant patient presenting with seizures, monitoring during labor, and postpartum care.

Billing Considerations

Documentation must clearly indicate the relationship between eclampsia and any interventions performed.

Maternal-Fetal Medicine

Documentation Requirements

Comprehensive documentation of maternal-fetal monitoring and interventions during high-risk pregnancies.

Common Clinical Scenarios

Management of severe preeclampsia progressing to eclampsia, including fetal monitoring and delivery planning.

Billing Considerations

Consideration of fetal outcomes and maternal health in coding and documentation.

Coding Guidelines

Inclusion Criteria

Use O15.9 When
  • 10 coding guidelines for eclampsia require specificity regarding the timing of seizures and any associated complications
  • Coders must ensure that documentation supports the diagnosis and any interventions performed

Exclusion Criteria

Do NOT use O15.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

59000CPT Code

Delivery, vaginal, after previous cesarean

Clinical Scenario

Used when a patient with eclampsia requires an emergency vaginal delivery.

Documentation Requirements

Documentation must include the indication for delivery and any complications encountered.

Specialty Considerations

Obstetricians must document the urgency and rationale for the delivery method chosen.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of eclampsia, improving the ability to track outcomes and complications associated with this condition. It emphasizes the need for detailed documentation to support the diagnosis and treatment provided.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of eclampsia, improving the ability to track outcomes and complications associated with this condition. It emphasizes the need for detailed documentation to support the diagnosis and treatment provided.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of eclampsia, improving the ability to track outcomes and complications associated with this condition. It emphasizes the need for detailed documentation to support the diagnosis and treatment provided.

Resources

Clinical References

  • •
    ACOG Practice Bulletin on Hypertension in Pregnancy

Coding & Billing References

  • •
    ACOG Practice Bulletin on Hypertension in Pregnancy

Frequently Asked Questions

What is the difference between eclampsia and preeclampsia?

Preeclampsia is characterized by hypertension and proteinuria during pregnancy, while eclampsia is the occurrence of seizures in a patient with preeclampsia. Eclampsia is a severe complication that requires immediate medical intervention.