ICD10BillableValid for clinical use
ICD-10 Code K91.86: Retained cholelithiasis following cholecystectomy
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).
When is it used?
- May be used when a clinician documents retained cholelithiasis following cholecystectomy in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
11Diseases of the digestive system (K00-K95)
block
K90-K95Other diseases of the digestive system
category
K91Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
category
K91.8Other intraoperative and postprocedural complications and disorders of digestive system
currentK91.8
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
GastroenterologistGeneral Physician
Related codes
K91.81Other intraoperative complications of digestive systemcodeK91.82Postprocedural hepatic failurecodeK91.83Postprocedural hepatorenal syndromecodeK91.84Postprocedural hemorrhage of a digestive system organ or structure following a procedurecategoryK91.85Complications of intestinal pouchcategoryK91.87Postprocedural hematoma and seroma of a digestive system organ or structure following a procedurecategoryK91.89Other postprocedural complications and disorders of digestive systemcode
Sibling codes
K91.81Other intraoperative complications of digestive systembillableK91.82Postprocedural hepatic failurebillableK91.83Postprocedural hepatorenal syndromebillableK91.84Postprocedural hemorrhage of a digestive system organ or structure following a procedureK91.85Complications of intestinal pouchK91.87Postprocedural hematoma and seroma of a digestive system organ or structure following a procedureK91.89Other postprocedural complications and disorders of digestive systembillable
Coverage-related procedures and services
CPT 43235high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; DIAGNOSTIC, INCLUDING COLLECTION OF SPECIMEN(S) BY BRUSHING OR WASHING, WHEN PERFORMED (SEPARATE PROCEDURE)
Source: CMS coverage guidance
CPT 43270high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH ABLATION OF TUMOR(S), POLYP(S), OR OTHER LESION(S) (INCLUDES PRE- AND POST-DILATION AND GUIDE WIRE PASSAGE, WHEN PERFORMED)
Source: CMS coverage guidance
CPT 43244high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH BAND LIGATION OF ESOPHAGEAL/GASTRIC VARICES
Source: CMS coverage guidance
CPT 43239high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH BIOPSY, SINGLE OR MULTIPLE
Source: CMS coverage guidance
CPT 43255high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH CONTROL OF BLEEDING, ANY METHOD
Source: CMS coverage guidance
CPT 43233high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH DILATION OF ESOPHAGUS WITH BALLOON (30 MM DIAMETER OR LARGER) (INCLUDES FLUOROSCOPIC GUIDANCE, WHEN PERFORMED)
Source: CMS coverage guidance
Coding guidelines
Common synonyms
Retained cholelithiasis following cholecystectomy
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.