ICD-11 classes
01 Certain infectious or parasitic diseases
Other bacterial diseases
1C1D — Yaws
1C1D.0 — Primary yaws

ICD-11 1C1D.0 — Primary yaws

Primary yaws results from primary inoculation of Treponema pallidum subsp. pertenue into the skin, manifesting 2-12 weeks later as a localised papule (initial, primary or ‘mother' yaw) before developing into a large non-tender ulcerating nodule, often resembling a raspberry (hence the name ‘framboesia’). The primary lesion is most commonly located on the legs and ankles may also be found on the buttocks, arms, hands, and face. It usually heals after 3–6 months and is still present at the onset of the secondary stage in only a minority (9-15%).

It includes 2 items.

  • Chancre of yaws
  • Primary framboesia

The diagnosis excludes nothing.

It has no clarifying diagnoses.

The diagnosis is coded elsewhere:

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