A40: Streptococcal sepsis
Codes under A40 (Streptococcal sepsis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A40.0 | Sepsis due to streptococcus, group A | ✓ |
| A40.0 | Sepsis due to streptococcus, group A | ✓ |
| A40.1 | Sepsis due to streptococcus, group B | ✓ |
| A40.1 | Sepsis due to streptococcus, group B | ✓ |
| A40.3 | Sepsis due to Streptococcus pneumoniae | ✓ |
| A40.3 | Sepsis due to Streptococcus pneumoniae | ✓ |
| A40.8 | Other streptococcal sepsis | ✓ |
| A40.8 | Other streptococcal sepsis | ✓ |
| A40.9 | Streptococcal sepsis, unspecified | ✓ |
| A40.9 | Streptococcal sepsis, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code A40?
A40 is an ICD-10-CM category covering Streptococcal sepsis. It contains 10 more specific diagnosis codes, 10 of which are billable.
Is A40 a billable code?
No — A40 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example A40.0 — Sepsis due to streptococcus, group A). 10 of the 10 codes under A40 are billable.
What codes fall under A40?
A40 includes A40.0, A40.0, A40.1, A40.1, A40.3, plus 5 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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