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v1.0.0
ICD-10 Guide
ICD-10 CodesB08.5

B08.5

Mumps orchitis

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

Code Description

ICD-10 B08.5 is a billable code used to indicate a diagnosis of mumps orchitis.

Key Diagnostic Point:

Mumps orchitis is an inflammation of one or both testicles caused by the mumps virus, a member of the Paramyxoviridae family. This condition typically occurs in post-pubertal males who have contracted mumps, a viral infection characterized by fever, headache, and parotitis (swelling of the salivary glands). Orchitis can develop 4 to 10 days after the onset of mumps symptoms. Clinically, patients may present with unilateral or bilateral testicular swelling, tenderness, and pain, which can lead to complications such as testicular atrophy or infertility if not managed appropriately. Diagnosis is primarily clinical, supported by serological testing for mumps IgM antibodies. Vaccination against mumps, typically administered as part of the MMR (measles, mumps, rubella) vaccine, has significantly reduced the incidence of mumps orchitis in vaccinated populations. However, outbreaks can still occur, particularly in unvaccinated individuals or in communities with low vaccination rates.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires knowledge of viral infections and their complications.
  • Differentiation from other causes of orchitis (e.g., bacterial infections, trauma).
  • Documentation must specify the presence of mumps virus.
  • Potential for complications that may require additional coding.

Audit Risk Factors

  • Inadequate documentation of viral etiology.
  • Failure to document vaccination status.
  • Misclassification of orchitis type (viral vs. bacterial).
  • Lack of supporting lab results for diagnosis.

Specialty Focus

Medical Specialties

Urology

Documentation Requirements

Detailed clinical notes on symptoms, examination findings, and any imaging or lab results.

Common Clinical Scenarios

Evaluation of testicular pain and swelling in post-pubertal males.

Billing Considerations

Ensure documentation reflects the viral cause and any complications.

Pediatrics

Documentation Requirements

Vaccination history and clinical presentation of mumps symptoms.

Common Clinical Scenarios

Management of mumps in children and potential complications.

Billing Considerations

Documenting the vaccination status is crucial for accurate coding.

Coding Guidelines

Inclusion Criteria

Use B08.5 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation and laboratory results
  • Include any relevant history of mumps infection and vaccination status

Exclusion Criteria

Do NOT use B08.5 When
No specific exclusions found.

Related CPT Codes

88160CPT Code

Testicular ultrasound

Clinical Scenario

Used to evaluate testicular swelling in suspected orchitis.

Documentation Requirements

Indicate reason for ultrasound and findings.

Specialty Considerations

Urologists may frequently order this procedure for diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of viral infections like mumps orchitis, improving data accuracy and facilitating better tracking of disease prevalence and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of viral infections like mumps orchitis, improving data accuracy and facilitating better tracking of disease prevalence and outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of viral infections like mumps orchitis, improving data accuracy and facilitating better tracking of disease prevalence and outcomes.

Resources

Clinical References

  • •
    CDC Mumps Information

Coding & Billing References

  • •
    CDC Mumps Information

Frequently Asked Questions

What are the common symptoms of mumps orchitis?

Common symptoms include testicular swelling, pain, fever, and sometimes nausea. Symptoms typically develop after the onset of mumps.

How can mumps orchitis be prevented?

Vaccination with the MMR vaccine is the most effective way to prevent mumps and its complications, including orchitis.