Endoscopic Retrograde Cholangiopancreatography (ERCP): Cannulation of Biliary Duct and/or Pancreatic Duct, 51.97,52.91

Using the oral route, a long, side-viewing duodenoscope is positioned opposite the ampulla of Vater. The ampulla is cannulated and the catheter is inserted into the pancreatic duct, 52.91, and/or the biliary duct, 51.97. The following code assignments are provided to answer questions on the coding of various types of ERCP procedures: Note: As of October 1, 1989, codes 51.97 and 52.91 have been deleted.Diagnostic ERCP of the biliary or pancreatic duct is coded to 51.10.ERCP of the biliary duct with removal of stones is coded to 51.88.ERCP of the...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This premium article explains the scope of ERCP cannulation procedures involving the biliary and pancreatic ducts and discusses how related procedure types are grouped for coding reference. It is relevant to coders, CDI staff, billing professionals, and clinical documentation reviewers working with digestive system endoscopy and historical coding guidance. The article also covers related diagnostic and therapeutic ERCP groupings and notes on associated imaging and drainage-related reporting.

Why This Topic Matters

ERCP coding can vary based on the duct examined and the type of service performed, so clear reference material helps support accurate code selection and documentation review. This article is especially useful for understanding how historical ERCP procedure references are organized and how related reporting concepts are presented.

Article Sections

  1. ERCP Cannulation Overview

    Introduces the ERCP cannulation approach and the duct locations involved. Provides the general procedural context for the rest of the article.

  2. Coding Notes and Historical References

    Summarizes the article’s reference notes about ERCP-related coding groupings and historical code status. Also covers associated reporting concepts mentioned alongside the procedure categories.

  3. Diagnostic and Therapeutic ERCP Groupings

    Presents the main diagnostic and therapeutic ERCP categories discussed in the article. Includes broad references to biliary, pancreatic, and combined duct scenarios.

  4. Drainage-Related ERCP Reference

    Describes an additional ERCP reference involving catheter-based drainage through the nasal route. Keeps the focus on the procedural grouping rather than code-level instructions.

What You Will Learn

  • The general procedural context for ERCP cannulation of the biliary and pancreatic ducts
  • How the article organizes diagnostic and therapeutic ERCP references
  • What historical coding notes and related reporting concepts are mentioned
  • How drainage-related ERCP references are presented in the article

Who Should Read This

  • Medical coders
  • Coding auditors
  • Clinical documentation integrity specialists
  • Billing and reimbursement staff
  • Gastroenterology practice staff

Codes Discussed

  • ICD-9-CM: 51.97
  • ICD-9-CM: 52.91
  • ICD-9-CM: 51.10
  • ICD-9-CM: 51.88
  • ICD-9-CM: 51.64
  • ICD-9-CM: 51.87
  • ICD-9-CM: 52.94
  • ICD-9-CM: 52.21
  • ICD-9-CM: 52.93
  • ICD-9-CM: 51.84
  • ICD-9-CM: 51.85
  • ICD-9-CM: 51.86
  • ICD-9-CM: 51.11
  • HCPCS Level II: 87.66

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