Monday, March 9, 2015

CMS Updates MLN Matter ICD-10 Document

Dianne De La Mare

The US Department of Health and Human Services, Centers for Medicare & Medicaid Services (CMS) has recently added a new question to its MLN Matters, Medicare Fee-For Service (FFS) Claims Processing Guidance for Implementing International Classification of Diseases, 10th Edition (ICD-10) (MM7492).

The new question asks “Will CMS allow for dual processing of ICD-9 and ICD-10 codes (accept and process both ICD-9 and ICD-10 codes for dates of service on and after October 1, 2015?” CMS answers this question by stating “No, CMS will not allow for dual processing of ICD-9 and ICD-10 codes after ICD-10 implementation on October 1, 2015…The scope of systems changes and testing needed to allow for dual processing would require significant resources and could not be accomplished by the October 1, 2015 implementation date.”

To obtain a copy of the revised MLN Matter document go to

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