B27 Infectious mononucleosis
ICD-10-CM category B27 sits in Chapter 1 (Certain infectious and parasitic diseases, A00-B99). It contains 16 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
B27.0 Gammaherpesviral mononucleosisB27.1 Cytomegaloviral mononucleosisB27.8 Other infectious mononucleosisB27.9 Infectious mononucleosis, unspecified
Billable codes in B27
| Code | Description |
|---|---|
B27.00 | Gammaherpesviral mononucleosis without complication |
B27.01 | Gammaherpesviral mononucleosis with polyneuropathy |
B27.02 | Gammaherpesviral mononucleosis with meningitis |
B27.09 | Gammaherpesviral mononucleosis with other complications |
B27.10 | Cytomegaloviral mononucleosis without complications |
B27.11 | Cytomegaloviral mononucleosis with polyneuropathy |
B27.12 | Cytomegaloviral mononucleosis with meningitis |
B27.19 | Cytomegaloviral mononucleosis with other complication |
B27.80 | Other infectious mononucleosis without complication |
B27.81 | Other infectious mononucleosis with polyneuropathy |
B27.82 | Other infectious mononucleosis with meningitis |
B27.89 | Other infectious mononucleosis with other complication |
B27.90 | Infectious mononucleosis, unspecified without complication |
B27.91 | Infectious mononucleosis, unspecified with polyneuropathy |
B27.92 | Infectious mononucleosis, unspecified with meningitis |
B27.99 | Infectious mononucleosis, unspecified with other complication |
Search within ICD-10-CM for B27 and related codes
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