A40Header code — not billable

Streptococcal sepsis

Chapter
1. Certain infectious and parasitic diseases
Category
A40
Effective date
October 1, 2026

Related codes in category A40

A40.0Sepsis due to streptococcus, group AYesA40.1Sepsis due to streptococcus, group BYesA40.3Sepsis due to Streptococcus pneumoniaeYesA40.8Other streptococcal sepsisYesA40.9Streptococcal sepsis, unspecifiedYes

Frequently asked questions

What is ICD-10 code A40?

A40 is an ICD-10-CM diagnosis code for Streptococcal sepsis.

Is A40 a billable code?

No. A40 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is A40 in?

A40 falls under Chapter 1: Certain infectious and parasitic diseases.

When did A40 become effective?

A40 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to A40?

A40 belongs to category A40, which includes 5 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.