Is B66 a billable ICD-10-CM code?

No. B66 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does B66 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).

B66

B66 — Other fluke infections

Non-billable headerICD-10-CM

B66 is a non-billable header ICD-10-CM code for other fluke infections. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

B66 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead B66

8 child codes. Green means billable.

B66.0Opisthorchiasis
B66.1Clonorchiasis
B66.2Dicroceliasis
B66.3Fascioliasis
B66.4Paragonimiasis
B66.5Fasciolopsiasis
B66.8Other specified fluke infections
B66.9Fluke infection, unspecified

Questions about B66

Is B66 a billable ICD-10-CM code?: No. B66 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does B66 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).