Is A49.8 a billable ICD-10-CM code?

Yes. A49.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does A49.8 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 A49.8?

A49.8 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 A49.8 (A49) and apply to it just the same.

A49.8

A49.8 — Other bacterial infections of unspecified site

Billable / specific codeICD-10-CM

A49.8 is a billable, specific ICD-10-CM code for other bacterial infections of unspecified site. It is valid for submission on a claim.

Excludes1 inherited from the categories above A49.8

These are not written on A49.8, but they bind it: a note on a category applies to every code beneath it. Billing A49.8 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)

Risk adjustment

A49.8 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.

How A49.8 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A49.8.

Colibacillosis
Friedländer's B NEC(bacillus)
Burkholderia›cepacia
Infection, infected, infective›Bacteroides NEC
Infection, infected, infective›Cronobacter(sakazakii)
Infection, infected, infective›Escherichia coli NEC(E.)
Infection, infected, infective›Klebsiella pneumoniae NEC(K.)
Infection, infected, infective›mixed flora NEC(bacterial)
Infection, infected, infective›Proteus NEC(mirabilis) (morganii) (vulgaris)
Infection, infected, infective›Pseudomonas NEC
Infection, infected, infective›Serratia NEC
Infection, infected, infective›Bacillus›Friedländer's NEC

Code history

A49.8 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share A49. If A49.8 is not quite right, the correct code is usually one of these.

Questions about A49.8

Is A49.8 a billable ICD-10-CM code?: Yes. A49.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does A49.8 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 A49.8?: A49.8 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 A49.8 (A49) and apply to it just the same.