Bone and joint lesions of yaws

This code represents the manifestation of yaws, a chronic tropical infection caused by Treponema pallidum subspecies pertenue, affecting the bones and joints. These lesions can include periostitis, osteitis, dactylitis, and gummatous lesions of the skeletal system, leading to pain, swelling, and deformities.

Use this code when documentation explicitly states bone or joint involvement due to yaws. This includes conditions like saber shins, goundou (nasopharyngeal hyperostosis), or other osteoarticular manifestations confirmed to be a result of yaws infection. Ensure the medical record clearly links the skeletal pathology to a confirmed or suspected diagnosis of yaws.

• Do not use this code for non-yaws related bone or joint infections; specify the causative organism and site.
• Consider sequencing this code after the primary yaws diagnosis (A66.x) if the bone/joint lesion is a secondary manifestation.
• Ensure documentation specifies the affected bone(s) or joint(s) for potential additional specificity, though this code is comprehensive for the general bone/joint involvement.