2024 ICD-10-CM Diagnosis Code A66.9

Yaws, unspecified

  • A66.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A66.9 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A66.9 – other international versions of ICD-10 A66.9 may differ.

The following code(s) above A66.9 contain annotation back-references

 that may be applicable to A66.9:

  • A00-B99  Certain infectious and parasitic diseases
  • A65-A69  Other spirochetal diseases
  • A66  Yaws

Approximate Synonyms

  • Yaws

Clinical Information

  • A systemic non-venereal infection of the tropics caused by treponema pallidum subspecies pertenue.
  • An endemic, infectious, nonvenereal disease in humans that presents mainly in children younger than 15 years. The disease occurs primarily in warm, humid, tropical areas of africa, asia, south america, and oceania, among poor rural populations where conditions of overcrowding and poor sanitation prevail. Infection with treponema pertenue, a subspecies of treponema pallidum, causes the disease.
  • Tropical systemic non-venereal infection caused by treponema pallidum subspecies pertenue.

ICD-10-CM A66.9 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses without cc/mcc

Convert A66.9 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to A66.9: