Other infectious diseases (B99) ICD-10-CM
The B99 section covers other infectious diseases with 3 ICD-10-CM diagnosis codes, of which 2 are billable in fiscal year 2027. The section is organized into the 1 code ranges listed below.
Code Ranges in This Section 1 ranges · 3 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| B99 | Other and unspecified infectious diseases (B99) | 3 | 2 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the B99 Code Range
Infectious diseases in this group are described as either other infectious diseases or unspecified infectious diseases. The group sits within the chapter on certain infectious and parasitic diseases.
The category B99 separates these descriptions: B99.8 is other infectious disease, while B99.9 is unspecified infectious disease.
Questions About This Page
How many codes are in the B99 range?
The B99 range contains 3 ICD-10-CM diagnosis codes in FY 2027. 2 of them are billable, and the rest are category headers that organize the section.
What conditions does B99 cover?
The range covers other infectious diseases. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
