A66.6 — Bone and joint lesions of yaws
A66.6 is a billable, specific ICD-10-CM code for bone and joint lesions of yaws. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Yaws ganglion
- Yaws goundou
- Yaws gumma, bone
- Yaws gummatous osteitis or periostitis
- Yaws hydrarthrosis
- Yaws osteitis
- Yaws periostitis (hypertrophic)
Other codes that can never be billed with A66.6
These codes carry an Excludes1 note pointing at A66.6. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A66.6 alone.
Risk adjustment
A66.6 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 92 Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis0.479 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
How A66.6 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A66.6.
- Goundou
- Henpue, henpuye
- Ganglion›of yaws(early) (late)
- Hydrarthrosis›of yaws(early) (late)
- Osteitis›due to yaws
- Periostitis›yaws(hypertrophic) (early) (late)
- Yaws›bone lesions
- Yaws›ganglion
- Yaws›hydrarthrosis
- Yaws›joint lesions
- Yaws›osteitis
- Yaws›periostitis(hypertrophic)
Related codes at this level
Codes that share A66. If A66.6 is not quite right, the correct code is usually one of these.
Questions about A66.6
- Is A66.6 a billable ICD-10-CM code?
- Yes. A66.6 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A66.6 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other spirochetal diseases (A65-A69).