A49: Bacterial infection of unspecified site
Codes under A49 (Bacterial infection of unspecified site). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A49.0 | Staphylococcal infection, unspecified site | — |
| A49.0 | Staphylococcal infection, unspecified site | — |
| A49.01 | Methicillin susceptible Staphylococcus aureus infection, unspecified site | ✓ |
| A49.01 | Methicillin susceptible Staphylococcus aureus infection, unspecified site | ✓ |
| A49.1 | Streptococcal infection, unspecified site | ✓ |
| A49.1 | Streptococcal infection, unspecified site | ✓ |
| A49.02 | Methicillin resistant Staphylococcus aureus infection, unspecified site | ✓ |
| A49.02 | Methicillin resistant Staphylococcus aureus infection, unspecified site | ✓ |
| A49.2 | Hemophilus influenzae infection, unspecified site | ✓ |
| A49.2 | Hemophilus influenzae infection, unspecified site | ✓ |
| A49.3 | Mycoplasma infection, unspecified site | ✓ |
| A49.3 | Mycoplasma infection, unspecified site | ✓ |
| A49.8 | Other bacterial infections of unspecified site | ✓ |
| A49.8 | Other bacterial infections of unspecified site | ✓ |
| A49.9 | Bacterial infection, unspecified | ✓ |
| A49.9 | Bacterial infection, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code A49?
A49 is an ICD-10-CM category covering Bacterial infection of unspecified site. It contains 16 more specific diagnosis codes, 14 of which are billable.
Is A49 a billable code?
No — A49 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example A49.0 — Staphylococcal infection, unspecified site). 14 of the 16 codes under A49 are billable.
What codes fall under A49?
A49 includes A49.0, A49.0, A49.01, A49.01, A49.1, plus 11 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free