Multiple Chronic Conditions

Prevalence and Medicare utilization and spending are presented for multiple chronic conditions (MCC). MCC is based upon counting the number of chronic conditions from the set of 21 chronic conditions and grouping into four categories (0-1, 2-3, 4-5 and 6 or more). Information is presented for (1) U.S. counties, (2) U.S. states, including Washington, DC, Puerto Rico, and the U.S. Virgin Islands, and is available for the years 2007-2018.

The data are available as Excel files.

Note: On October 1, 2015 the conversion from the 9th version of the International Classification of Diseases (ICD-9-CM) to version 10 (ICD-10-CM) occurred. Regardless of when a claim was submitted for payment, services that occurred prior to October 1, 2015, use ICD-9 codes. Chronic conditions identified in 2015 are based upon ICD-9 codes for the first ¾ of the year (January-September) 2015 and ICD-10 codes for the last quarter of the year (October-December). Starting in 2016, chronic conditions identified are based upon ICD-10 codes for the full year.

Inquiries regarding this data can be sent to MedicareChronicConditions@cms.hhs.gov.