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 2026, 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
About the B04 Code Range
The ICD-10 code B04 is used specifically to identify cases of Monkeypox, a viral infection caused by the monkeypox virus. This code helps healthcare providers accurately document and track this illness in medical records and reporting systems.
Monkeypox, also known as Mpox, can lead to a variety of complications such as encephalopathy (brain inflammation), corneal disorders (affecting the eye), and sepsis (blood infection). The ICD-10 code B04 covers these related conditions caused by the monkeypox virus, making it essential for coders to recognize synonyms like "encephalopathy caused by monkeypox virus" or "sepsis caused by monkeypox virus" to select the correct code. Using this code ensures precise communication about the presence and impact of monkeypox in patients, which is crucial for surveillance and treatment.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
