ICD-10 Code for Yaws

The default ICD-10-CM 2027 code for yaws is A66.9 – Yaws, unspecified. More specific codes depend on the details documented, as listed in the official index (10 codes, 10 billable).

Main code: A66.9 – Yaws, unspecified
Billable: Yes

Index entries for Yaws

bone lesions – A66.6
butter – A66.1
chancre – A66.0
cutaneous, less than five years after infection – A66.2
early (cutaneous) (macular) (maculopapular) (micropapular) (papular) – A66.2
- frambeside – A66.2
- skin lesions NEC – A66.2
eyelid – A66.2
ganglion – A66.6
gangosis, gangosa – A66.5
gumma, gummata – A66.4
- bone – A66.6
gummatous
- frambeside – A66.4
- osteitis – A66.6
- periostitis – A66.6
hydrarthrosis – A66.6 – see also subcategory M14.8-
hyperkeratosis (early) (late) – A66.3
initial lesions – A66.0
joint lesions – A66.6 – see also subcategory M14.8-
juxta-articular nodules – A66.7
late nodular (ulcerated) – A66.4
latent (without clinical manifestations) (with positive serology) – A66.8
mother – A66.0
mucosal – A66.7
multiple papillomata – A66.1
nodular, late (ulcerated) – A66.4
osteitis – A66.6
papilloma, plantar or palmar – A66.1
periostitis (hypertrophic) – A66.6
specified NEC – A66.7
ulcers – A66.4
wet crab – A66.1

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.