ICD-10-CM 2027 diagnosis code
A49.0Staphylococcal infection, unspecified site
A49.0 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About A49.0
A49.0 is the ICD-10-CM diagnosis code for staphylococcal infection, unspecified site. It belongs to category A49 (bacterial infection of unspecified site), block A30-A49 (other bacterial diseases) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.
Within A49, choose A49.0 (Staphylococcal infection, unspecified site) only when documentation doesn't support a more specific option: streptococcal infection, unspecified site (A49.1), hemophilus influenzae infection, unspecified site (A49.2), mycoplasma infection, unspecified site (A49.3), other bacterial infections of unspecified site (A49.8) and bacterial infection, unspecified (A49.9).
To report this condition, pick the subcode that matches the documentation: A49.01 (site) and A49.02 (site).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under A49.0
Notes that apply from higher levels
Instructions written at a parent level also apply to A49.0.
Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about A49.0
Is A49.0 billable?
- No. A49.0 is a header code. Report one of its more specific subcodes instead.