Excludes1 pair
B47.0 vs B48.2
B47.0 and B48.2 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 B48.2
eumycetoma (B47.0)
B47.0
Eumycetoma
Billable
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- B35-B49
Use when the record says
- Madura foot, mycotic
- Maduromycosis
Indexed under
- Eumycetoma
- Maduromycosis
- Infection, infected, infective › Acremonium falciforme
- Infection, infected, infective › Ascomycetes
- Infection, infected, infective › Cephalosporium falciforme
B48.2
Allescheriasis
Billable
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- B35-B49
Use when the record says
- Infection due to Pseudallescheria boydii
Indexed under
- Allescheriasis
- Petrellidosis
- Infection, infected, infective › Allescheria boydii
- Infection, infected, infective › Monosporium apiospermum
- Infection, infected, infective › Petriellidium boydii
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