ICD-10 B27.09
Billable / SpecificGammaherpesviral mononucleosis with other complications
About ICD-10-CM B27.09
ICD-10-CM code B27.09 represents Gammaherpesviral mononucleosis with other complications. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block B27). The 2026 edition of ICD-10-CM B27.09 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under B27.09. Per CMS ICD-10-CM Tabular 2026.
- Hepatomegaly in gammaherpesviral mononucleosis
Medicare LCD Coverage for B27.09
Local Coverage Determinations (LCDs) from CMS MACs that list B27.09 as a covered diagnosis.
Showing top 7. Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B27.09.
1 Medicare
CPT Codes Commonly Billed with B27.09
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Convert B27.09 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| B27.09 | 075 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To B27.09
Other codes in section B25-B34 (Other viral diseases).
ICD-10 B27.09, Billing FAQ
Is ICD-10 code B27.09 billable? +
Yes, B27.09 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to B27.09? +
ICD-10 B27.09 includes: Hepatomegaly in gammaherpesviral mononucleosis.
What CPT codes are commonly billed with B27.09? +
Procedures frequently paired with B27.09 include: J9190, J9260, J9215.
What ICD-9 codes does B27.09 map to? +
Per CMS GEMs, B27.09 maps to ICD-9 codes: 075. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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