Smallpox (B03) ICD-10-CM
The B03 code range covers smallpox 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.
- In 1980 the 33rd World Health Assembly declared that smallpox had been eradicated.
- The classification is maintained for surveillance purposes.
Codes in the B03 Range 1 codes · 1 billable
- B03 Smallpox
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B03 range.
Smallpox
An acute, highly contagious, often fatal infectious disease caused by an orthopoxvirus characterized by a biphasic febrile course and distinctive progressive skin eruptions. Vaccination has succeeded in eradicating smallpox worldwide. (Dorland, 28th ed)
About the B03 Code Range
Smallpox is a highly contagious viral infection with fever in two phases and a distinctive skin eruption that changes over time. The B03 category sits within a group of viral infections marked by skin or mucous membrane lesions.
Questions About This Page
How many billable codes are in the B03 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 B03 range classify?
The range classifies smallpox. 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.
