Other viral diseases
67 codes in this section
About Section B25-B34
Section B25-B34 (B25-B34) covers other viral diseases. It sits within the Certain infectious and parasitic diseases chapter (A00-B99). This section contains 67 ICD-10-CM codes, 55 billable diagnoses you can submit on a claim, and 12 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in B25-B34
Grouped by 3-character root code. Click any code for full detail.
| B25.0 | Cytomegaloviral pneumonitis | Billable |
| B25.1 | Cytomegaloviral hepatitis | Billable |
| B25.2 | Cytomegaloviral pancreatitis | Billable |
| B25.8 | Other cytomegaloviral diseases | Billable |
| B25.9 | Cytomegaloviral disease, unspecified | Billable |
| B26.0 | Mumps orchitis | Billable |
| B26.1 | Mumps meningitis | Billable |
| B26.2 | Mumps encephalitis | Billable |
| B26.3 | Mumps pancreatitis | Billable |
| B26.8 | Mumps with other complications | Header |
| B26.81 | Mumps hepatitis | Billable |
| B26.82 | Mumps myocarditis | Billable |
| B26.83 | Mumps nephritis | Billable |
| B26.84 | Mumps polyneuropathy | Billable |
| B26.85 | Mumps arthritis | Billable |
| B26.89 | Other mumps complications | Billable |
| B26.9 | Mumps without complication | Billable |
| B27.0 | Gammaherpesviral mononucleosis | Header |
| B27.00 | Gammaherpesviral mononucleosis without complication | Billable |
| B27.01 | Gammaherpesviral mononucleosis with polyneuropathy | Billable |
| B27.02 | Gammaherpesviral mononucleosis with meningitis | Billable |
| B27.09 | Gammaherpesviral mononucleosis with other complications | Billable |
| B27.1 | Cytomegaloviral mononucleosis | Header |
| B27.10 | Cytomegaloviral mononucleosis without complications | Billable |
| B27.11 | Cytomegaloviral mononucleosis with polyneuropathy | Billable |
| B27.12 | Cytomegaloviral mononucleosis with meningitis | Billable |
| B27.19 | Cytomegaloviral mononucleosis with other complication | Billable |
| B27.8 | Other infectious mononucleosis | Header |
| B27.80 | Other infectious mononucleosis without complication | Billable |
| B27.81 | Other infectious mononucleosis with polyneuropathy | Billable |
| B27.82 | Other infectious mononucleosis with meningitis | Billable |
| B27.89 | Other infectious mononucleosis with other complication | Billable |
| B27.9 | Infectious mononucleosis, unspecified | Header |
| B27.90 | Infectious mononucleosis, unspecified without complication | Billable |
| B27.91 | Infectious mononucleosis, unspecified with polyneuropathy | Billable |
| B27.92 | Infectious mononucleosis, unspecified with meningitis | Billable |
| B27.99 | Infectious mononucleosis, unspecified with other complication | Billable |
| B30.0 | Keratoconjunctivitis due to adenovirus | Billable |
| B30.1 | Conjunctivitis due to adenovirus | Billable |
| B30.2 | Viral pharyngoconjunctivitis | Billable |
| B30.3 | Acute epidemic hemorrhagic conjunctivitis (enteroviral) | Billable |
| B30.8 | Other viral conjunctivitis | Billable |
| B30.9 | Viral conjunctivitis, unspecified | Billable |
| B33.0 | Epidemic myalgia | Billable |
| B33.1 | Ross River disease | Billable |
| B33.2 | Viral carditis | Header |
| B33.20 | Viral carditis, unspecified | Billable |
| B33.21 | Viral endocarditis | Billable |
| B33.22 | Viral myocarditis | Billable |
| B33.23 | Viral pericarditis | Billable |
| B33.24 | Viral cardiomyopathy | Billable |
| B33.3 | Retrovirus infections, not elsewhere classified | Billable |
| B33.4 | Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS] | Billable |
| B33.8 | Other specified viral diseases | Billable |
| B34.0 | Adenovirus infection, unspecified | Billable |
| B34.1 | Enterovirus infection, unspecified | Billable |
| B34.2 | Coronavirus infection, unspecified | Billable |
| B34.3 | Parvovirus infection, unspecified | Billable |
| B34.4 | Papovavirus infection, unspecified | Billable |
| B34.8 | Other viral infections of unspecified site | Billable |
| B34.9 | Viral infection, unspecified | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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