Is A03 a billable ICD-10-CM code?

No. A03 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does A03 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Intestinal infectious diseases (A00-A09).

A03

A03 — Shigellosis

Non-billable headerICD-10-CM

A03 is a non-billable header ICD-10-CM code for shigellosis. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

A03 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 A03

6 child codes. Green means billable.

A03.0Shigellosis due to Shigella dysenteriae
A03.1Shigellosis due to Shigella flexneri
A03.2Shigellosis due to Shigella boydii
A03.3Shigellosis due to Shigella sonnei
A03.8Other shigellosis
A03.9Shigellosis, unspecified

Questions about A03

Is A03 a billable ICD-10-CM code?: No. A03 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does A03 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Intestinal infectious diseases (A00-A09).