AHA Coding Clinic® for ICD-9 - 2008 Issue 1; Ask the Editor

Gastroenteritis and Dehydration

A patient was seen in the emergency department with a two-day history of abdominal pain, nausea and vomiting due to acute gastroenteritis. The patient has hypertension and chronic renal insufficiency, status post renal transplant and is unable to tolerate anything by mouth, including his medication. He was admitted to the hospital for treatment of dehydration with aggressive hydration. What is the principal diagnosis, acute gastroenteritis or dehydration? What is the sequencing if the same patient's gastroenteritis is evaluated with stool studies and/or treated with oral antibiotics along with hydration? ...

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