Is A27 a billable ICD-10-CM code?

No. A27 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does A27 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Certain zoonotic bacterial diseases (A20-A28).

A27

A27 — Leptospirosis

Non-billable headerICD-10-CM

A27 is a non-billable header ICD-10-CM code for leptospirosis. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with A27

These codes carry an Excludes1 note pointing at A27. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A27 alone.

G01Meningitis in bacterial diseases classified elsewhere

Risk adjustment

A27 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 A27

3 child codes. Green means billable.

Questions about A27

Is A27 a billable ICD-10-CM code?: No. A27 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does A27 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Certain zoonotic bacterial diseases (A20-A28).