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ICD-10 Guide
ICD-10 CodesChapter 6: Diseases of the nervous systemG08

G08

Billable

Intracranial and intraspinal phlebitis and thrombophlebitis

Chapter 6:Diseases of the nervous system

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 G08 is a billable code used to indicate a diagnosis of intracranial and intraspinal phlebitis and thrombophlebitis.

Key Diagnostic Point:

Intracranial and intraspinal phlebitis and thrombophlebitis refer to the inflammation of veins within the cranial cavity or spinal canal, often associated with thrombosis. This condition can arise from various infectious processes, including bacterial meningitis, viral infections, or as a complication of other central nervous system (CNS) infections. The inflammation can lead to significant neurological deficits due to impaired venous drainage and increased intracranial pressure. Symptoms may include headache, fever, altered mental status, and focal neurological deficits. Diagnosis typically involves imaging studies such as MRI or CT scans, which can reveal venous thrombosis or associated edema. Treatment often requires anticoagulation therapy, management of the underlying infection, and sometimes surgical intervention. The condition is serious and can lead to complications such as cerebral venous sinus thrombosis, which can result in stroke or other severe neurological outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between phlebitis and other CNS infections
  • Need for comprehensive documentation of symptoms and diagnostic imaging
  • Potential overlap with other codes related to CNS infections
  • Variability in clinical presentation and underlying causes

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to link the diagnosis to the underlying infection
  • Misclassification of the type of phlebitis
  • Lack of imaging reports to support the diagnosis

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with headaches, altered mental status, or focal neurological deficits.

Billing Considerations

Ensure that all relevant diagnostic tests and their results are documented to support the diagnosis.

Infectious Disease

Documentation Requirements

Comprehensive history of infection, laboratory results, and treatment regimens.

Common Clinical Scenarios

Patients with CNS infections leading to complications such as phlebitis.

Billing Considerations

Document the infectious source and response to treatment to justify the diagnosis.

Coding Guidelines

Inclusion Criteria

Use G08 When
  • According to ICD
  • 10 coding guidelines, G08 should be used when there is clear documentation of phlebitis or thrombophlebitis in the intracranial or intraspinal regions
  • It is important to ensure that the diagnosis is supported by imaging studies and clinical findings

Exclusion Criteria

Do NOT use G08 When
No specific exclusions found.

Related CPT Codes

70450CPT Code

CT scan of the head

Clinical Scenario

Used to evaluate for signs of phlebitis or thrombosis in patients presenting with neurological symptoms.

Documentation Requirements

Document the indication for the CT scan and findings.

Specialty Considerations

Neurology specialists should ensure imaging correlates with clinical findings.

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 G08, improving the granularity of data for epidemiological studies and healthcare management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like G08, improving the granularity of data for epidemiological studies and healthcare management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like G08, improving the granularity of data for epidemiological studies and healthcare management.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the common causes of intracranial phlebitis?

Common causes include bacterial infections, particularly those leading to meningitis, as well as viral infections and complications from other CNS conditions.

How is G08 diagnosed?

Diagnosis typically involves a combination of clinical evaluation, imaging studies such as MRI or CT scans, and laboratory tests to identify underlying infections.