ICD-10 Code B25.8 – Other cytomegaloviral diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B25.8 – Other cytomegaloviral diseases
What it is
B25.8 identifies cytomegalovirus disease that is documented but does not fit the more specific CMV categories. Use it for clinically significant CMV infection when the record does not name a different site or manifestation.
Clinical signs
Clinical features vary; refer to documentation. CMV disease may present with systemic illness or organ-specific findings, but you should code only when the record supports active disease rather than simple exposure or past infection.
When to use this code
Use B25.8 when the provider documents “other cytomegaloviral disease,” “CMV disease,” or a CMV-related condition that is not described by a more specific ICD-10 code. It is also appropriate when the chart confirms CMV involvement but the exact manifestation is not further specified. Check documentation if the record is unclear.
Do not use for
Do not use this code for CMV exposure, carrier status, or seropositivity without active disease. If a more specific CMV diagnosis is documented, code that instead.
Coding tip
Look for the provider’s exact wording and code the most specific CMV diagnosis supported by the record.