A66 - Yaws

Version 2023
Short Description:Yaws
Long Description:Yaws
Status: Not Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Certain infectious and parasitic diseases (A00–B99)

A66 is a non-specific and non-billable ICD-10 code code, consider using a code with a higher level of specificity for a diagnosis of yaws. The code is not specific and is NOT valid for the year 2023 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Clinical Information

Specific Coding for Yaws

Non-specific codes like A66 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for yaws:

  • BILLABLE CODE - Use A66.0 for Initial lesions of yaws
  • BILLABLE CODE - Use A66.1 for Multiple papillomata and wet crab yaws
  • BILLABLE CODE - Use A66.2 for Other early skin lesions of yaws
  • BILLABLE CODE - Use A66.3 for Hyperkeratosis of yaws
  • BILLABLE CODE - Use A66.4 for Gummata and ulcers of yaws
  • BILLABLE CODE - Use A66.5 for Gangosa
  • BILLABLE CODE - Use A66.6 for Bone and joint lesions of yaws
  • BILLABLE CODE - Use A66.7 for Other manifestations of yaws
  • BILLABLE CODE - Use A66.8 for Latent yaws
  • BILLABLE CODE - Use A66.9 for Yaws, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:


This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Patient Education

Bacterial Infections

Bacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit across a pencil eraser. Most types of don't make you sick. Many types are helpful. Some of them help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese.

But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.

Antibiotics are the usual treatment. When you take antibiotics, follow the directions carefully. Each time you take antibiotics, you increase the chances that bacteria in your body will learn to resist them causing antibiotic resistance. Later, you could get or spread an infection that those antibiotics cannot cure.

NIH: National Institute of Allergy and Infectious Diseases

[Learn More in MedlinePlus]

Code History