Monkeypox (B04) ICD-10-CM
The B04 code range covers monkeypox with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Mpox
Codes in the B04 Range 1 codes · 1 billable
- B04 Monkeypox
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B04 range.
Mpox, Monkeypox
A viral disease infecting PRIMATES and RODENTS. Its clinical presentation in humans is similar to SMALLPOX including FEVER; HEADACHE; COUGH; and a painful RASH. It is caused by MONKEYPOX VIRUS and is usually transmitted to humans through BITES or via contact with an animal's BLOOD. Interhuman transmission is relatively low (significantly less than smallpox).
About the B04 Code Range
Monkeypox, also called mpox, is a viral disease that can cause fever, headache, cough, and a painful rash. B04 identifies it within a group of viral infections marked by skin and mucous membrane lesions.
Questions About This Page
How many billable codes are in the B04 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B04 range classify?
The range classifies monkeypox. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
