Is A49.0 a billable ICD-10-CM code?

No. A49.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does A49.0 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).

What cannot be coded together with A49.0?

A49.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above A49.0 (A49) and apply to it just the same.

A49.0

A49.0 — Staphylococcal infection, unspecified site

Non-billable headerICD-10-CM

A49.0 is a non-billable header ICD-10-CM code for staphylococcal infection, unspecified site. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above A49.0

These are not written on A49.0, but they bind it: a note on a category applies to every code beneath it. Billing A49.0 with anything listed here is a denial.

Written on A49 — Bacterial infection of unspecified site

bacterial agents as the cause of diseases classified elsewhere (B95-B96)
chlamydial infection NOS (A74.9)
meningococcal infection NOS (A39.9)
rickettsial infection NOS (A79.9)
spirochetal infection NOS (A69.9)

Other codes that can never be billed with A49.0

These codes carry an Excludes1 note pointing at A49.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A49.0 alone.

Z16Resistance to antimicrobial drugs

Risk adjustment

A49.0 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 history

A49.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead A49.0

2 child codes. Green means billable.

Related codes at this level

Codes that share A49. If A49.0 is not quite right, the correct code is usually one of these.

Questions about A49.0

Is A49.0 a billable ICD-10-CM code?: No. A49.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does A49.0 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).
What cannot be coded together with A49.0?: A49.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above A49.0 (A49) and apply to it just the same.