FY2027
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Excludes1 pair

K83- vs K91.5

K83 and K91.5 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 K83
postcholecystectomy syndrome (K91.5)
K83

Other diseases of biliary tract

Not billable
Chapter 11
Diseases of the digestive system
Section
K80-K87
K91.5

Postcholecystectomy syndrome

Billable
Chapter 11
Diseases of the digestive system
Section
K90-K95
Indexed under
  • Postcholecystectomy syndrome
  • Remnant › cystic duct, postcholecystectomy
  • Syndrome › cystic duct stump
  • Syndrome › postcholecystectomy
  • Complication › surgical procedure › postcholecystectomy syndrome

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