Sequelae of infectious and parasitic diseases (B90-B94) ICD-10-CM
The B90–B94 section covers sequelae of infectious and parasitic diseases with 14 ICD-10-CM diagnosis codes, of which 12 are billable in fiscal year 2026. The section is organized into the 4 code ranges listed below.
Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- condition resulting from (sequela) the infectious or parasitic disease
Code Ranges in This Section 4 ranges · 14 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the B90–B94 Code Range
ICD-10 codes B90-B94 are used specifically to document the late effects or sequelae of infectious and parasitic diseases. These codes capture health problems that persist or develop after the original infection has resolved, such as complications following tuberculosis, poliomyelitis, leprosy, viral hepatitis, and other infections.
This range includes detailed codes like B90 for sequelae of tuberculosis affecting various organs including the central nervous system (B90.0), bones and joints (B90.2), and respiratory system (B90.9). It also covers post-infectious conditions such as late effects of poliomyelitis (B91), leprosy complications (B92), and sequelae from viral encephalitis (B94.1) or trachoma (B94.0). The category B94.8 includes less common sequelae like post-herpetic scars and arthritis following infections. These codes help medical coders accurately link chronic conditions such as post-tuberculous reactive arthritis, neurogenic bladder from poliomyelitis, or immune-related disorders to their infectious origins. Using these codes ensures a clear record of long-term health impacts after infection, which supports proper treatment and epidemiological tracking.
Questions About This Page
How many codes are in the B90-B94 range?
The B90-B94 range contains 14 ICD-10-CM diagnosis codes in FY 2026. 12 of them are billable, and the rest are category headers that organize the section.
What conditions does B90-B94 cover?
The range covers sequelae of infectious and parasitic 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
