A49.1 – Streptococcal infection, unspecified site

ICD-10-CM 2027 diagnosis code · Other bacterial diseases

Billable code

ICD-10-CM code A49.1

Code: A49.1 (claims format: A491)
Description: Streptococcal infection, unspecified site
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 1. Certain infectious and parasitic diseases (A00-B99)
Block: A30-A49 Other bacterial diseases
Parent codes: A49

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

A49 – Bacterial infection of unspecified site

Excludes1 (not coded here):

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 (not included here):

chlamydial infection NOS (A74.9)

Index terms for A49.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in A49

Frequently asked questions

What is ICD-10 code A49.1?

A49.1 is the ICD-10-CM code for streptococcal infection, unspecified site, in the block A30-A49 (Other bacterial diseases).

Is A49.1 a billable code?

Yes. A49.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does A49.1 belong to?

It belongs to category A49 – Bacterial infection of unspecified site.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.