AHA Coding Clinic® for ICD-9 - 1991 Fourth Quarter

Lyme Disease*

*A list of the reference material used in preparing this article is available on request Lyme disease is the most common tick-borne illness in the United States. It is caused by a spirochetal bacterium, Borrelia burgdorferi, and transmitted to humans by the bite of certain ticks. The clinical symptoms of Lyme disease may be divided into three stages. The first, or localized, stage appears from three days to three weeks after the tick bite. It consists of erythema migrans, a skin rash that frequently begins as a red spot at the site of the tick bite, which expands to...

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