ICD-10 A40
Non-Billable HeaderStreptococcal sepsis
About ICD-10-CM A40
ICD-10-CM code A40 represents Streptococcal sepsis. This is a non-billable header code in the Infectious and Parasitic Diseases chapter (block A40). The 2026 edition of ICD-10-CM A40 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with A40. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- neonatal (P36.0-P36.1)
- puerperal sepsis (O85)
- sepsis due to Streptococcus, group D (A41.81)
Coding Notes
Code First
- , if applicable, postprocedural sepsis (T81.44-)
- sepsis due to central venous catheter (T80.211-)
- streptococcal sepsis during labor (O75.3)
- streptococcal sepsis following abortion or ectopic or molar pregnancy (O03.37, O03.87, O04.87, O07.37, O08.82)
- streptococcal sepsis following immunization (T88.0-)
- streptococcal sepsis following infusion, transfusion or therapeutic injection (T80.22-, T80.29-)
Medicare LCD Coverage for A40
Local Coverage Determinations (LCDs) from CMS MACs that list A40 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing A40.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but A40 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with A40
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To A40
Other codes in section A30-A49 (Other bacterial diseases).
ICD-10 A40, Billing FAQ
Is ICD-10 code A40 billable? +
No, A40 is a non-billable header code. Use a more specific child code from block A40 when submitting claims.
What codes are Type 1 Excludes for A40? +
Type 1 Excludes (never code together with A40): neonatal (P36.0-P36.1); puerperal sepsis (O85); sepsis due to Streptococcus, group D (A41.81)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 18, 2026.
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