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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

A category’s note binds every code beneath it.

Written on A49: Bacterial infection of unspecified site

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

Excludes2 inherited from the categories above A49.0

Not part of this code, but both may be coded when both are present.

Written on A49: Bacterial infection of unspecified site

  • chlamydial infection NOS (A74.9)

Other codes that can never be billed with A49.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z16Resistance to antimicrobial drugs

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead A49.0

2 child codes. Green means billable.

Other codes under A49

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.