ICD-10-CM · Chapter 1 · A00-B99
B27 Infectious mononucleosis
Includes
- glandular fever
- monocytic angina
- Pfeiffer's disease
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| B27..0 | Gammaherpesviral mononucleosis | No |
| B27..00 | Gammaherpesviral mononucleosis without complication | Yes |
| B27..01 | Gammaherpesviral mononucleosis with polyneuropathy | Yes |
| B27..02 | Gammaherpesviral mononucleosis with meningitis | Yes |
| B27..09 | Gammaherpesviral mononucleosis with other complications | Yes |
| B27..1 | Cytomegaloviral mononucleosis | No |
| B27..10 | Cytomegaloviral mononucleosis without complications | Yes |
| B27..11 | Cytomegaloviral mononucleosis with polyneuropathy | Yes |
| B27..12 | Cytomegaloviral mononucleosis with meningitis | Yes |
| B27..19 | Cytomegaloviral mononucleosis with other complication | Yes |
| B27..8 | Other infectious mononucleosis | No |
| B27..80 | Other infectious mononucleosis without complication | Yes |
| B27..81 | Other infectious mononucleosis with polyneuropathy | Yes |
| B27..82 | Other infectious mononucleosis with meningitis | Yes |
| B27..89 | Other infectious mononucleosis with other complication | Yes |
| B27..9 | Infectious mononucleosis, unspecified | No |
| B27..90 | Infectious mononucleosis, unspecified without complication | Yes |
| B27..91 | Infectious mononucleosis, unspecified with polyneuropathy | Yes |
| B27..92 | Infectious mononucleosis, unspecified with meningitis | Yes |
| B27..99 | Infectious mononucleosis, unspecified with other complication | Yes |
Last reviewed: September 2026