The Inpatient File contains complete stay records for enrollees who used inpatient services including diagnoses, procedures, discharge status, length of stay, and payment amount. The MAX Inpatient File contains 10 diagnostic fields and 7 procedure fields.
MAX 2014 Currently 17 states can be requested: CA, GA, ID, IA, LA, MI, MN, MS, MO, NJ, PA, SD, TN, UT, VT, WV, WY
MAX 2013 Currently 28 states can be requested. These include: AR, AZ, CA, CT, GA, HI, IA, ID, IN, LA, MA, MI, MN, MO, MS, NJ, NY, OH, OK, OR, PA, SD, TN, UT, VT, WA, WV, WY.
MAX 2012 Currently 47 states can be requested. At this time, four states have not submitted the necessary MSIS or T-MSIS files. MAX 2012 is currently not available for CO, ID, KS, RI.
MAX 2011 Files are available for all states except CO. ME is limited to only the PS and RX files.
MAX production for the missing state/year combinations noted above may be undertaken after data are received and approved by CMS in the new T-MSIS format.
CMS cannot estimate or confirm anticipated release dates for additional MAX data.
Researchers are reminded that data costs are affected by cohort size, files requested and years of data. Charges are per data request or amendment. eg: if 30 states are needed for MAX 2013 and the researcher chooses to make a request for the 20 states that are currently available and amend later when the other 10 become available, they will pay again for the remaining 10 states. Depending on cohort size, it might be more cost effective to wait to request the 30 states at one time when all are available rather than pay for two cohort pulls.