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ICD-10 Guide
ICD-10 CodesB33.8

B33.8

Other specified viral diseases

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

Code Description

ICD-10 B33.8 is a billable code used to indicate a diagnosis of other specified viral diseases.

Key Diagnostic Point:

B33.8 encompasses a variety of viral infections that do not fall under more specific categories. This includes infections caused by less common viruses or atypical presentations of known viral diseases. Examples include viral infections such as those caused by the adenovirus, parvovirus B19, and certain strains of enteroviruses. These infections can present with a range of symptoms, from mild respiratory illness to more severe systemic effects. Diagnostic methods typically involve serological tests, PCR (polymerase chain reaction) assays, and viral cultures, depending on the suspected virus. Antiviral treatments may vary; for instance, some viral infections may be managed with supportive care, while others may require specific antiviral medications, such as acyclovir for herpesviruses or ribavirin for certain viral hemorrhagic fevers. Accurate coding is essential for proper treatment and epidemiological tracking of these infections.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of viral infections included under this code
  • Need for precise documentation of the specific virus
  • Potential overlap with other viral disease codes
  • Variability in clinical presentation and treatment

Audit Risk Factors

  • Inadequate documentation of the specific viral infection
  • Failure to provide laboratory results supporting the diagnosis
  • Misuse of the code for more common viral infections
  • Inconsistent coding practices across different providers

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed clinical notes including symptoms, lab results, and treatment plans.

Common Clinical Scenarios

Patients presenting with atypical viral infections or complications from known viruses.

Billing Considerations

Ensure all laboratory results are documented and correlate with the diagnosis.

Pediatrics

Documentation Requirements

Thorough history and physical examination notes, including vaccination status.

Common Clinical Scenarios

Children with viral infections presenting with fever, rash, or respiratory symptoms.

Billing Considerations

Consider age-specific presentations and potential complications in children.

Coding Guidelines

Inclusion Criteria

Use B33.8 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include any relevant laboratory findings and specify the viral agent when possible

Exclusion Criteria

Do NOT use B33.8 When
No specific exclusions found.

Related CPT Codes

87522CPT Code

Infectious agent detection by nucleic acid (DNA or RNA); enterovirus

Clinical Scenario

Used when testing for enterovirus in a patient with suspected viral infection.

Documentation Requirements

Document the reason for testing and any relevant clinical findings.

Specialty Considerations

Infectious disease specialists should ensure all tests are justified.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of viral diseases, improving the ability to track and manage public health concerns related to viral infections.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of viral diseases, improving the ability to track and manage public health concerns related to viral infections.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of viral diseases, improving the ability to track and manage public health concerns related to viral infections.

Resources

Clinical References

  • •
    CDC Viral Diseases Overview

Coding & Billing References

  • •
    CDC Viral Diseases Overview

Frequently Asked Questions

What types of infections are included under B33.8?

B33.8 includes various viral infections that are not classified elsewhere, such as infections caused by adenoviruses, parvoviruses, and enteroviruses.