Coding Trend Analyses: Mitral Stenosis

Project Title Coding Trend Analyses: Mitral Stenosis
Date Posted
Monday, August 26, 2019

The purpose of this report was to compare the frequency of diagnoses for mitral stenosis using International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) versus International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes. ICD-10-CM code definitions were determined by mapping from ICD-9-CM code definitions using the Centers for Medicare and Medicaid Services (CMS) General Equivalence Mappings (GEMs). Forward-backward mapping (FBM) was used to map ICD-9-CM to ICD-10-CM codes. (1)


(1) Fung, K. W., et al. (2016). "Preparing for the ICD-10-CM Transition: Automated Methods for Translating ICD Codes in Clinical Phenotype Definitions." EGEMS (Wash DC) 4(1): 1211.

Health Outcome
mitral stenosis
Time Period
October 1, 2010 - September 30, 2016
Data Sources
Sentinel Distributed Database (SDD)