ICD-10-CM > A00-B99 > B25-B34 > B27 B27 Infectious mononucleosis Non-Billable/Non-Specific Includes glandular fevermonocytic anginaPfeiffer's disease Codes B27.0Gammaherpesviral mononucleosisB27.00Gammaherpesviral mononucleosis without complicationB27.01Gammaherpesviral mononucleosis with polyneuropathyB27.02Gammaherpesviral mononucleosis with meningitisB27.09Gammaherpesviral mononucleosis with other complicationsB27.1Cytomegaloviral mononucleosisB27.10Cytomegaloviral mononucleosis without complicationsB27.11Cytomegaloviral mononucleosis with polyneuropathyB27.12Cytomegaloviral mononucleosis with meningitisB27.19Cytomegaloviral mononucleosis with other complicationB27.8Other infectious mononucleosisB27.80Other infectious mononucleosis without complicationB27.81Other infectious mononucleosis with polyneuropathyB27.82Other infectious mononucleosis with meningitisB27.89Other infectious mononucleosis with other complicationB27.9Infectious mononucleosis, unspecifiedB27.90Infectious mononucleosis, unspecified without complicationB27.91Infectious mononucleosis, unspecified with polyneuropathyB27.92Infectious mononucleosis, unspecified with meningitisB27.99Infectious mononucleosis, unspecified with other complication