Rat-bite fevers (A25)

The ICD-10 code A25 covers rat-bite fevers, which are bacterial infections transmitted through bites or exposure to rats. This section includes more specific infections like spirillosis and streptobacillosis, commonly called rat bite fever.

Rat-bite fever is classified under the codes A25.0 for spirillosis and A25.1 for streptobacillosis, reflecting infections caused by distinct bacteria: Spirillum and Streptobacillus species, respectively. Both conditions share synonyms such as “rat bite fever,” “spirillary fever,” or “streptobacillary fever,” helping healthcare providers and medical coders accurately link symptoms and diagnoses to these ICD-10 codes. When the exact bacterial cause is unknown, A25.9 is used for unspecified rat-bite fever cases. By capturing these distinctions, the ICD-10 code for rat-bite fevers ensures precise documentation and aids in targeted treatment and epidemiological tracking of these uncommon but serious infections.