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International Classification of Diseases, Tenth Revision (ICD-10)

The Final Rule published in January 2009 - as revised in August 2014 - mandated the transition to International Classification of Diseases, Tenth Revision (ICD-10) coding on 1 October 2015. The Final Rule modified the standard medical data code sets for coding diagnoses and inpatient hospital procedures by concurrently adopting the:

  • International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) for diagnosis coding, including the official ICD-10-CM guidelines for Coding and Reporting
  • International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) for inpatient hospital procedure coding, including the Official ICD-10-PCS Guidelines for Coding and Reporting

To facilitate the MHS enterprise transition to ICD-10, the HIPAA Transactions, Code Sets and Identifiers (TCS&I) Office chaired an active ICD-10 Integrated Project Team (IPT) consisting of representatives with functional and technical perspectives from across the MHS. The IPT supported requirements development, system testing, training, enterprise communication, revisions to forms and publications, and Private Sector Care-related transition activities. After initiating the transition on 1 October 2015, the IPT stood up a virtual "Ready Room" to monitor the transition for any associated issues. After four months of monitoring and seeing no loss of MHS business capabilities, the transition was given a "mission accomplished" status.

    Last Updated: March 01, 2023
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