B27.1
Non-billableCytomegaloviral mononucleosis
Cytomegaloviral mononucleosis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
- glandular fever
- monocytic angina
- Pfeiffer's disease
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
Child Codes (4)
Related Codes(3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(6)
Frequently Asked Questions
What is the ICD-10 code for cytomegaloviral mononucleosis?
The ICD-10-CM code for cytomegaloviral mononucleosis is B27.1. The full clinical description is "Cytomegaloviral mononucleosis". B27.1 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code B27.1 mean?
ICD-10-CM code B27.1 represents “Cytomegaloviral mononucleosis”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a non-billable header code. Use a more specific child code for billing purposes.
Is B27.1 a billable code?
No, B27.1 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under B27.1.
What chapter is B27.1 in?
B27.1 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with B27.1?
B27.1 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters.
What are the subcategories under B27.1?
B27.1 has 4 child codes, including: 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).
Are additional codes required with B27.1?
Yes, when using B27.1, also report: resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for B27.1?
B27.1 is linked to 1 UMLS Concept Unique Identifier: C0276254. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does B27.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like cytomegaloviral mononucleosis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of B27.1?
B27.1 maps to the ICD-11 code: 1D81.1 (Mononucleosis due to cytomegalovirus).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.