In simple words: Yaws is a tropical infection that can cause sores on your skin, and if untreated, can affect your bones and joints. This code is used when yaws has caused problems in your bones and joints.

This code represents bone and joint lesions associated with yaws, a chronic infectious tropical disease caused by the bacterium Treponema pallidum pertenue.It typically affects the skin, bones, and joints, often starting with painless skin lesions and progressing to bone pain, swelling, and potential disfigurement if left untreated.

Example 1: A child living in a tropical region with poor hygiene presents with bone pain, swelling in the fingers, and a history of skin sores. Dark-field microscopy confirms the presence of Treponema pallidum pertenue, leading to a diagnosis of yaws with bone and joint involvement., An adult who recently traveled to a tropical area develops multiple skin lesions followed by joint pain and swelling.After testing positive for yaws, the code A66.6 is used to document the bone and joint complications., A patient with a history of untreated yaws presents with significant bone disfigurement and limited mobility. A66.6 is used to code the long-term skeletal impact of the disease.

Documentation should include evidence of yaws infection (e.g., laboratory results, physical exam findings) and specific details regarding the bone and joint involvement, such as location, severity, and impact on function.