Excludes1 pair
A40- vs A41-
A40 and A41 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
The official note, declared on A41
streptococcal sepsis (A40.-)
A40
Streptococcal sepsis
Not billable
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- A30-A49
Indexed under
- Glomerulonephritis › in › sepsis › streptococcal
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027