B25

Non-billable

Cytomegaloviral disease

B25 is the ICD-10-CM code for Cytomegaloviral disease. It is a non-billable category code — use a more specific child code such as B25.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
5
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

Cytomegalovirus (CMV) is a virus found around the world. It is related to the viruses that cause chickenpox and infectious mononucleosis (mono). Between 50% and 80% of adults in the United States have had a CMV infection by age 40. Once CMV is in a person's body, it stays there for life. CMV is spread through close contact with body fluids. Most people with CMV don't get sick and don't know that they've been…

Read more about Cytomegalovirus Infections at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes1 — not coded here

  • congenital cytomegalovirus infection (P35.1)
  • cytomegaloviral mononucleosis (B27.1-)

Frequently asked questions

What is ICD-10 code B25?
B25 is the ICD-10-CM code for "Cytomegaloviral disease". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B25 a billable code?
No — B25 is a non-billable header code. Use a more specific child code (such as B25.0) for billing.
What are the subcodes of B25?
B25 has 5 more specific child codes, including B25.0, B25.1, B25.2.
What is excluded from B25?
Excludes1 (not coded here): congenital cytomegalovirus infection (P35.1); cytomegaloviral mononucleosis (B27.1-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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