ICD-10 Code A40.1 – Sepsis due to streptococcus, group B (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A40.1 – Sepsis due to streptococcus, group B
What it is
This code identifies sepsis caused by Group B streptococcal infection. Use it when the record documents systemic infection from Streptococcus, group B.
Clinical signs
Clinical features vary; refer to documentation. Sepsis may present with signs of infection plus organ dysfunction, and the organism should be identified as Group B streptococcus when available.
When to use this code
Use A40.1 when the provider links sepsis to Streptococcus, group B, such as in blood culture results or a final diagnosis. Code it when documentation clearly states sepsis due to this organism, including maternal, neonatal, or adult cases if specified.
Do not use for
Do not use this code for streptococcal infections without sepsis, or when the organism is another streptococcal group. Check documentation if the note says bacteremia, septicemia, or infection without a confirmed sepsis diagnosis.
Coding tip
Verify that the provider explicitly connects sepsis to Group B streptococcus before assigning A40.1.