Excludes1 pair

M20.0- vs M72.0

M20.0 and M72.0 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 M20.0
palmar fascial fibromatosis [Dupuytren] (M72.0)
M20.0

Deformity of finger(s)

Not billable
Chapter 13
Diseases of the musculoskeletal system and connective tissue
Section
M20-M25
M72.0

Palmar fascial fibromatosis [Dupuytren]

Billable
Chapter 13
Diseases of the musculoskeletal system and connective tissue
Section
M70-M79
Indexed under
  • Dupuytren's contraction or disease
  • Contraction, contracture, contracted › Dupuytren's
  • Contraction, contracture, contracted › palmar fascia
  • Disease, diseased › Dupuytren's (muscle contracture)
  • Fibromatosis › Dupuytren's

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