Cytomegaloviral disease (B25) ICD-10-CM
The B25 code range covers cytomegaloviral disease with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the B25 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B25 range.
Cytomegaloviral Hepatitis
Hepatitis secondary to viral infection with cytomegalovirus.
Cytomegalovirus Infections
Infection with CYTOMEGALOVIRUS, characterized by enlarged cells bearing intranuclear inclusions. Infection may be in almost any organ, but the salivary glands are the most common site in children, as are the lungs in adults.
About the B25 Code Range
Cytomegalovirus infection can appear as disease affecting the lungs, liver, or pancreas. This category also includes other and unspecified forms of the disease.
Within B25, the subdivisions separate disease of the lungs (B25.0), liver (B25.1), and pancreas (B25.2). They also distinguish other cytomegaloviral diseases (B25.8) from unspecified cytomegaloviral disease (B25.9).
Questions About This Page
How many billable codes are in the B25 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B25 range classify?
The range classifies cytomegaloviral disease. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
