References: 1. Centers for Medicare & Medicaid Services. ICD-10-CM tabular list of diseases and injuries. 2017 codes tables and index. https://www.cms.gov/Medicare/Coding/ICD10/2017-ICD-10-CM-and-GEMs.html. Accessed August 20, 2016. 2. Fieker A, Philpott J, Armand M. Enzyme replacement therapy for pancreatic insufficiency: present and future. Clin Exp Gastroenterol. 2011;4:55-73. 3. Dominguez-Muñoz JE. Pancreatic enzyme therapy for pancreatic exocrine insufficiency. Curr Gastroenterol Rep. 2007;9(2):116-122. 4. Signs & symptoms of celiac disease. Celiac Support Association website. http://www.csaceliacs.info/symptoms_of_celiac_disease.jsp. Accessed August 11, 2016. 5. Longo DL, Fauci AS, Kasper DL, et al, eds. Harrison’s Principles of Internal Medicine. 18th ed. New York, NY: McGraw-Hill; 2012. 6. Bacterial overgrowth syndrome. The Merck Manual website. http://www.merckmanuals.com/professional/gastrointestinal_disorders/malabsorption_syndromes/bacterial_overgrowth_syndrome. Accessed August 11, 2016.