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v1.0.0
ICD-10 Guide
ICD-10 CodesB26.0

B26.0

Mumps orchitis

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

Code Description

ICD-10 B26.0 is a billable code used to indicate a diagnosis of mumps orchitis.

Key Diagnostic Point:

Mumps orchitis is a viral infection characterized by inflammation of one or both testicles, typically occurring as a complication of mumps, a contagious viral disease caused by the mumps virus. The condition is most commonly seen in post-pubertal males, where it can lead to significant discomfort, swelling, and potential long-term complications such as infertility. The mumps virus is transmitted through respiratory droplets or direct contact with an infected individual. Diagnosis is primarily clinical, supported by laboratory tests such as serology for mumps-specific IgM antibodies or PCR testing of saliva or urine. In acute cases, patients may present with unilateral or bilateral testicular swelling, pain, fever, and malaise. While mumps orchitis is generally self-limiting, supportive care is essential, and antiviral treatments are not typically indicated as there are no specific antiviral agents for mumps. The condition underscores the importance of vaccination with the MMR (measles, mumps, rubella) vaccine, which has significantly reduced the incidence of mumps and its complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between viral and bacterial orchitis
  • Understanding the clinical presentation and complications
  • Knowledge of laboratory confirmation methods
  • Awareness of vaccination history and its impact on incidence

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to confirm diagnosis with laboratory tests
  • Misclassification of orchitis type (viral vs. bacterial)
  • Lack of vaccination history documentation

Specialty Focus

Medical Specialties

Urology

Documentation Requirements

Detailed clinical notes on testicular examination, pain assessment, and any imaging studies performed.

Common Clinical Scenarios

Evaluation of acute scrotal pain, swelling, and differential diagnosis of testicular torsion.

Billing Considerations

Ensure clear documentation of the onset of symptoms and any relevant history of mumps or vaccination.

Infectious Disease

Documentation Requirements

Comprehensive history of exposure, vaccination status, and laboratory test results.

Common Clinical Scenarios

Management of viral infections with complications, including mumps orchitis.

Billing Considerations

Focus on the epidemiology of mumps and the importance of vaccination in preventing outbreaks.

Coding Guidelines

Inclusion Criteria

Use B26.0 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the diagnosis, including any complications
  • Include relevant patient history and laboratory results to support the diagnosis of mumps orchitis

Exclusion Criteria

Do NOT use B26.0 When
No specific exclusions found.

Related CPT Codes

86592CPT Code

Mumps serology test

Clinical Scenario

Used to confirm diagnosis of mumps in a patient presenting with orchitis.

Documentation Requirements

Document the reason for testing and the clinical findings leading to the test.

Specialty Considerations

Urology and Infectious Disease specialists should ensure comprehensive documentation of the patient's history and presenting symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of mumps orchitis, improving the accuracy of data collection and epidemiological tracking of this viral infection and its complications.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mumps orchitis, improving the accuracy of data collection and epidemiological tracking of this viral infection and its complications.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of mumps orchitis, improving the accuracy of data collection and epidemiological tracking of this viral infection and its complications.

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 malaise. Patients may also experience nausea and vomiting.

How is mumps orchitis diagnosed?

Diagnosis is primarily clinical, supported by laboratory tests such as serology for mumps-specific IgM antibodies or PCR testing.

What is the treatment for mumps orchitis?

Treatment is generally supportive, focusing on pain management and rest. Antiviral medications are not typically used.

Can mumps orchitis lead to infertility?

Yes, particularly in post-pubertal males, mumps orchitis can lead to complications such as testicular atrophy and infertility.