Initial lesions of yaws

This code represents the primary stage of yaws, a chronic tropical infection caused by the spirochete Treponema pallidum pertenue. It is characterized by the appearance of a single, painless, granulomatous lesion, often referred to as a "mother yaw" or "framboesia," typically on the lower extremities. This initial lesion is highly infectious and can persist for several months.

Use this code when documentation clearly indicates the presence of the initial, primary lesion of yaws. This typically involves a patient presenting with a solitary, papular or nodular lesion that may ulcerate, in an endemic area. Confirmation often relies on clinical presentation and sometimes serological testing or dark-field microscopy.

• Ensure documentation specifies "initial lesion" to differentiate from secondary or tertiary stages of yaws.
• Do not confuse with syphilis (A50-A53) or pinta (A67), which are caused by different Treponema subspecies.
• Consider co-reporting codes for any associated symptoms or complications if documented.