AHA Coding Clinic® for ICD-9 - 2013 Issue 3; Ask the Editor

Nesidoblastosis Status Post Gastric Bypass

A 44-year-old female post gastric bypass for morbid obesity developed symptoms of hypoglycemia and was found to have endogenous hyperinsulinemic hypoglycemia and hyperplastic pancreatic islet beta cells. The provider diagnosed “post gastric bypass nesidioblastosis.” The patient was admitted for treatment and underwent subtotal pancreatectomy and splenectomy. The term “nesidioblastosis” is not indexed in ICD-9-CM. What are the appropriate code assignments for this admission? ...

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