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  2. ICD-10-CM Codes List
  3. A00–B99
  4. B25-B34
  5. Other viral diseases, not elsewhere classified (B33)

Other viral diseases, not elsewhere classified (B33)

The ICD-10 code section B33 covers various other viral diseases not classified elsewhere. It includes specific conditions caused by different viruses, such as epidemic myalgia, viral carditis, and retrovirus infections.

This section helps medical coders identify and report viral infections that do not fit into other predefined categories. For example, B33.0 is used for epidemic myalgia, also known as viral myalgia or epidemic pleurodynia, which involves muscle pain linked to viral infections. Codes B33.20 through B33.24 categorize viral carditis, encompassing myocarditis, endocarditis, pericarditis, and cardiomyopathy caused by viruses like Coxsackie or enteroviruses. The code B33.3 identifies infections from retroviruses, while B33.4 covers hantavirus pulmonary syndrome, a serious cardiopulmonary condition. Additionally, B33.8 includes a diverse group of other specified viral diseases caused by rare or less common viruses. Knowing the ICD-10 code for epidemic myalgia or viral myocarditis can aid healthcare professionals and coders in precise documentation and billing for these unique viral illnesses.

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.

Hantavirus Pulmonary Syndrome

Acute respiratory illness in humans caused by the SIN NOMBRE VIRUS whose primary rodent reservoir is the deer mouse Peromyscus maniculatus. First identified in the southwestern United States, this syndrome is characterized most commonly by fever, myalgias, headache, cough, and rapid respiratory failure.

Sin Nombre virus

A species of ORTHOHANTAVIRUS which emerged in the Four Corners area of the United States in 1993. It causes a serious, often fatal pulmonary illness (HANTAVIRUS PULMONARY SYNDROME) in humans. Transmission is by inhaling aerosolized rodent secretions that contain virus particles, carried especially by deer mice (PEROMYSCUS maniculatus) and pinyon mice (P. truei).