Is A77 a billable ICD-10-CM code?

No. A77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does A77 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Rickettsioses (A75-A79).

A77

A77 — Spotted fever [tick-borne rickettsioses]

Non-billable headerICD-10-CM

A77 is a non-billable header ICD-10-CM code for spotted fever [tick-borne rickettsioses]. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

A77 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 A77

7 child codes. Green means billable.

A77.0Spotted fever due to Rickettsia rickettsii
A77.1Spotted fever due to Rickettsia conorii
A77.2Spotted fever due to Rickettsia siberica
A77.3Spotted fever due to Rickettsia australis
A77.4Ehrlichiosis
A77.8Other spotted fevers
A77.9Spotted fever, unspecified

Questions about A77

Is A77 a billable ICD-10-CM code?: No. A77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does A77 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Rickettsioses (A75-A79).