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K91.86

Billable

Retained cholelithiasis following cholecystectomy

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Gallstones that remain in the bile duct or biliary system after gallbladder removal surgery.

Coding Tips

  • •This code indicates incomplete removal of stones during cholecystectomy; verify imaging or operative findings confirm retained stones
  • •Document whether stones are symptomatic or asymptomatic, as this affects treatment decisions

Code Hierarchy

└K91Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified└K91.8Other intraoperative and postprocedural complications and disorders of digestive system└K91.86Retained cholelithiasis following cholecystectomy
└K91.86Retained cholelithiasis following cholecystectomy

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