Cat-scratch disease

This code represents a bacterial infection, Bartonella henselae, typically transmitted to humans through a scratch or bite from an infected cat. It commonly presents with localized lymphadenopathy, often accompanied by fever, malaise, and sometimes a papule or pustule at the inoculation site.

Use this code when documentation confirms a diagnosis of cat-scratch disease, often following exposure to a cat and characteristic clinical findings. Supporting documentation should include a history of cat exposure, physical exam findings consistent with lymphadenopathy, and potentially positive serology or biopsy results for Bartonella henselae.

• Ensure documentation clearly links the patient's symptoms to a cat scratch or bite.
• Do not confuse with other causes of lymphadenopathy; specificity is key.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter.