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ICD-10 Guide
ICD-10 CodesO22.50

O22.50

Billable

Cerebral venous thrombosis in pregnancy, unspecified trimester

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

Code Description

ICD-10 O22.50 is a billable code used to indicate a diagnosis of cerebral venous thrombosis in pregnancy, unspecified trimester.

Key Diagnostic Point:

Cerebral venous thrombosis (CVT) is a rare but serious condition that can occur during pregnancy, characterized by the formation of a thrombus in the cerebral venous system. This condition can lead to significant morbidity, including headaches, seizures, and neurological deficits. The risk factors for CVT in pregnancy include hypercoagulable states, dehydration, prolonged immobility, and certain medical conditions such as antiphospholipid syndrome. The diagnosis is typically confirmed through imaging studies such as MRI or CT scans. Management may involve anticoagulation therapy, which must be carefully considered in the context of pregnancy to balance the risks of thrombosis against the risks of bleeding. The unspecified trimester designation indicates that the exact timing of the condition's onset during pregnancy is not documented, which can complicate treatment decisions and coding accuracy. Proper documentation of symptoms, risk factors, and treatment plans is essential for accurate coding and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Unspecified trimester complicates treatment and coding.
  • Need for detailed documentation of symptoms and risk factors.
  • Potential for overlapping conditions (e.g., other thrombotic events).
  • Variability in treatment protocols based on individual patient factors.

Audit Risk Factors

  • Inadequate documentation of the patient's clinical status.
  • Failure to specify the trimester of pregnancy.
  • Lack of clarity in the treatment plan and anticoagulation management.
  • Misclassification of the condition as a different type of thrombosis.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed documentation of symptoms, risk factors, and treatment plans is essential. Providers should note any anticoagulation therapy and its rationale.

Common Clinical Scenarios

Patients presenting with headaches, neurological symptoms, or risk factors for thrombosis during pregnancy.

Billing Considerations

Consideration of the risks and benefits of anticoagulation therapy in the context of pregnancy is crucial.

Maternal-Fetal Medicine

Documentation Requirements

High-risk pregnancy documentation must include comprehensive assessments of maternal and fetal health, including any anticoagulation management.

Common Clinical Scenarios

Management of pregnant patients with known hypercoagulable disorders or previous thrombotic events.

Billing Considerations

Close monitoring of both maternal and fetal outcomes is necessary, with adjustments to treatment as needed.

Coding Guidelines

Inclusion Criteria

Use O22.50 When
  • According to ICD
  • 10 coding guidelines, it is essential to document the specific trimester when possible
  • If the trimester is unknown, the unspecified code may be used, but this should be clearly indicated in the medical record
  • Additionally, any associated conditions or complications should be coded to provide a complete clinical picture

Exclusion Criteria

Do NOT use O22.50 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99223CPT Code

Initial hospital care, typically 70 minutes or more

Clinical Scenario

Used when a pregnant patient with CVT is admitted for management.

Documentation Requirements

Comprehensive documentation of the patient's history, examination findings, and treatment plan.

Specialty Considerations

Obstetricians should ensure that all relevant pregnancy-related factors are included in the documentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like CVT in pregnancy, improving the accuracy of data collection and reimbursement processes. The granularity of ICD-10 codes helps in better tracking of maternal health outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like CVT in pregnancy, improving the accuracy of data collection and reimbursement processes. The granularity of ICD-10 codes helps in better tracking of maternal health outcomes.

Reimbursement & Billing Impact

reimbursement processes. The granularity of ICD-10 codes helps in better tracking of maternal health outcomes.

Resources

Clinical References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Coding & Billing References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Frequently Asked Questions

What are the common symptoms of cerebral venous thrombosis in pregnancy?

Common symptoms include severe headaches, visual disturbances, seizures, and neurological deficits. Prompt recognition and management are crucial to prevent complications.