A40.9 — Streptococcal sepsis, unspecified
A40.9 is a billable, specific ICD-10-CM code for streptococcal sepsis, unspecified. It is valid for submission on a claim.
Risk adjustment
A40.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 2 Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock0.500 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
A40.9 is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A56625Billing and Coding: Echocardiography
- A56781Billing and Coding: Transthoracic Echocardiography (TTE)
How A40.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A40.9.
- Sepsis›Streptococcus, streptococcal
- Embolism›pyemic›streptococcal
- Infection, infected, infective›streptococcal NEC›generalized(purulent)
- Disorder›tubulo-interstitial›sepsis›streptococcal
Related codes at this level
Codes that share A40. If A40.9 is not quite right, the correct code is usually one of these.
Questions about A40.9
- Is A40.9 a billable ICD-10-CM code?
- Yes. A40.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A40.9 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).