A40 — Streptococcal sepsis
Is A40 billable?
No — A40 is a non-billable header code. A40 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 5 billable codes beneath A40.
A40 at a glance
| Code | A40 |
|---|---|
| Description | Streptococcal sepsis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is A40 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to A40. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Glomerulonephritis › in › sepsis › streptococcal
Excludes1 — never code together
The conditions below can never be reported together with A40 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first
The underlying condition below must be sequenced before A40. A40 describes a manifestation and cannot be the principal or first-listed diagnosis.
- , 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-)
Use additional code — inherited from Chapter 1
Report an additional code alongside A40 to fully describe the condition. A40 is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here — inherited from Chapter 1
The conditions below are not part of A40, but a patient may have both at the same time. When documentation supports it, A40 and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
What codes fall under A40? (5)
How long has A40 existed?
A40 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with A40?
ICD-10-CM declares these codes mutually exclusive with A40 — exactly one of each pair can be correct for a given encounter.