B259 - Cytomegalovirus (CMV) infection without specific details about which organs are affected

International Classification of Diseases

Last updated: 10/3/2025

What is a ICD-10 Code?

ICD-10 (International Classification of Diseases, 10th Revision) codes are used to classify and code all diagnoses, symptoms, and procedures recorded in association with hospital care. These codes provide a standardized way to track health conditions and their treatment outcomes.

Detailed Description

This code indicates you have been diagnosed with a cytomegalovirus (CMV) infection, but the specific type or location of the infection in your body hasn't been specified. CMV is a common virus that many people carry without symptoms. However, it can cause illness in people with weakened immune systems, newborns, or during pregnancy. The infection can affect various organs including the lungs, liver, eyes, or digestive system. Since this is an 'unspecified' diagnosis, your doctor may need additional tests to determine exactly how CMV is affecting you and develop the most appropriate treatment plan.

Additional Information

CMV can be serious in immunocompromised patients, pregnant women, and newborns. Most healthy adults with normal immune systems may not require treatment. The 'unspecified' nature of this code suggests further evaluation may be needed to determine the extent and location of infection.

Category

Infectious Disease

Medical Specialty

Internal Medicine, Infectious Disease, Immunology

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • Blood tests or tissue samples showing CMV infection
  • Clinical symptoms consistent with CMV disease

What to Expect After

  • Additional testing to specify infection location
  • Antiviral medication if indicated
  • Monitoring of immune system status
  • Regular follow-up appointments

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

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