The September 2011 AAP Pediatric Coding Newsletter™ article, “What Can You Learn From This List?” included the top 25 diagnosis codes reported by pediatricians for encounters with children up to age 18 years. This list was taken from the American Academy of Pediatrics analysis of the National Ambulatory Medical Care Survey (NAMCS) years 2003–2008. The article also cross-referenced the top 25 International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes to the International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) codes for these conditions. Because diagnosis codes indicate medical necessity of services provided and serve as the denominators for many quality improvement measures, tips for more specific or accurate diagnosis coding were also included.

An updated analysis of the NAMCS years 2008–2010 (Table) reveals the current top 25 codes alongside changes from the previous list. The top 4 pediatric diagnoses are still well-child visits,...

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