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  2. ICD-10-CM Codes List
  3. A00–B99
  4. B25-B34
  5. Cytomegaloviral disease (B25)

Cytomegaloviral disease (B25)

The ICD-10 code B25 and its subcodes are used specifically to classify diseases caused by cytomegalovirus (CMV), a common virus that can lead to a range of infections affecting various organs. These codes help document the presence and type of cytomegaloviral disease in patients.

This section covers different manifestations of cytomegaloviral disease. The primary code B25 represents cytomegaloviral disease in general. More specific codes include B25.0 for cytomegaloviral pneumonitis (also known as cytomegaloviral pneumonia), B25.1 for cytomegaloviral hepatitis (or cytomegalovirus hepatitis), and B25.2 for cytomegaloviral pancreatitis, sometimes called infectious pancreatitis. The code B25.8 encompasses a wide variety of other cytomegaloviral conditions affecting different body systems such as the eyes (cytomegaloviral retinitis or chorioretinitis), the nervous system, skin, and gastrointestinal tract. Finally, B25.9 is used when cytomegaloviral disease is present but unspecified, including cases like cytomegalovirus viremia or disseminated CMV infection. Understanding these distinctions helps coders accurately assign the right ICD-10 code for CMV infections diagnosed in clinical settings.

Instructional Notations

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.

  • congenital cytomegalovirus infection P35.1
  • cytomegaloviral mononucleosis B27.1

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Viremia

The presence of viruses in the blood.