Spirillosis

This code represents an acute infectious disease caused by bacteria of the genus Spirillum, specifically Spirillum minus. It is typically transmitted through the bite of a rat or other rodent, leading to symptoms such as fever, rash, and lymphadenopathy. This condition is also known as Sodoku.

Use this code when documentation confirms a diagnosis of spirillosis, often following a rodent bite and presenting with characteristic clinical signs. Supporting documentation should include a history of exposure and clinical findings consistent with Sodoku.

• Differentiate from other rat-bite fevers, such as streptobacillary rat-bite fever (Haverhill fever), which is coded elsewhere.
• Ensure the documentation specifies Spirillum minus infection if possible, to avoid confusion with other bacterial infections.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter.