B27
B27: Infectious mononucleosis
Non-billable headerICD-10-CM
B27 is a non-billable header ICD-10-CM code for infectious mononucleosis. It cannot be billed on its own: choose one of the more specific child codes below.
Includes
Conditions this code covers.
- glandular fever
- monocytic angina
- Pfeiffer's disease
Other codes that can never be billed with B27
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead B27
4 child codes. Green means billable.