FY2027
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Excludes1 pair

K80- vs K83.1

K80 and K83.1 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 K83.1
obstruction of bile duct with cholelithiasis (K80.-)
K80

Cholelithiasis

Not billable
Chapter 11
Diseases of the digestive system
Section
K80-K87
K83.1

Obstruction of bile duct

Billable
Chapter 11
Diseases of the digestive system
Section
K80-K87
Use when the record says
  • Occlusion of bile duct without cholelithiasis
  • Stenosis of bile duct without cholelithiasis
  • Stricture of bile duct without cholelithiasis
Indexed under
  • Cholestasis NEC
  • Mirizzi's syndrome (hepatic duct stenosis)
  • Jaundice › obstructive
  • Jaundice › regurgitation
  • Obliteration › bile duct (noncalculous)

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