All ICD10 Codes
A48Not billable, use a more specific code below

Other bacterial diseases, not elsewhere classified

In Other bacterial diseases (A30-A49), chapter 1: Certain Infectious and Parasitic Diseases

8 billable codes under A48: 3 are an MCC, 2 are a CC; 3 map to HCC 2 (Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock), HCC 263 (Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene), HCC 282 (Aspiration and Specified Bacterial Pneumonias).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

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Instructional notes

Excludes1: not coded here, use a different code

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.

Read Section I.C.1 (page 19)

All codes under A48

A48 can't be used on a claim. Pick a billable code below; grey headings group them.

A48 MS-DRGs

As the principal diagnosis, the billable codes under A48 group to these 11 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Bacterial Infections

Bacteria are tiny organisms (living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. They can be found almost everywhere on Earth. There are lots of bacteria in and on your body. In fact, your body has about 10 times more bacteria cells than human cells.

Read more about bacterial infections on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.