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The International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM), is based on the official version of the World Health Organization's Ninth Revision. This coding system is for diagnosis codes used on Part A and Part B claims.

For inpatient procedures, ICD-9-PCS (Procedure Coding System) provides the procedure codes for submission on inpatient claims.

ICD-9 codes are to be used on Medicare (Part A) claims for FROM dates of service before October 1, 2015, or dates or discharge/through dates (for inpatient claims) before October 1, 2015.

For further guidance on billing Part B and DME claims with a date span, see Special Edition MLN Matters Article SE1408 This link takes you to an external website..


Last Updated Apr 27, 2016