A40 Streptococcal sepsis

The ICD-10-CM code for Streptococcal sepsis is A40 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

1: Certain infectious and parasitic diseases (A00-B99)

Section

A30-A49: Other bacterial diseases (A30-A49)

Category A40

6 codes (5 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to A40:

• Glomerulonephritis › in (due to) › sepsis › streptococcal

Official Coding Guidelines

Puerperal sepsis: use O85 + organism; don't use A40/A41; add R65.2- etc if applicable

k. Puerperal sepsis Code O85, Puerperal sepsis, should be assigned with a secondary code to identify the causal organism (e.g., for a bacterial infection, assign a code from category B95-B96, Bacterial infections in conditions classified elsewhere). A code from category A40, Streptococcal sepsis, or A41, Other sepsis, should not be used for puerperal sepsis. If applicable, use additional codes to identify severe sepsis (R65.2-) and any associated acute organ dysfunction.

HIV Infections (TOC entry)

a. Human Immunodeficiency Virus (HIV) Infections .............................................................. 19

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool