When researchers looked at how current pediatric diagnosis codes will be mapped forward to International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10), codes in October 2015, they found that more than 1 in 4 of them could be tangled in difficulty.

Rachel Caskey, MD, from the Department of Pediatrics and the Department of Internal Medicine at the University of Illinois at Chicago, and colleagues analyzed all Illinois Medicaid International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM), data for 2010 for all patients identified as primary care patients of the University of Illinois system as of April 2011.

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