Transformed Medicaid Statistical Information System (T-MSIS)

With the on-going changes to the national health care environment, the Centers for Medicare & Medicaid Services (CMS) has made significant investments to meet the organizational and information technology (IT) infrastructure to adequately represent CMS’ role in the healthcare marketplace. The Transformed Medicaid Statistical Information System (T-MSIS) is a critical data and systems component of the CMS Medicaid and CHIP Business Information Solution (MACBIS).

In anticipation of health marketplace reforms, CMS has been working with states to transform our MSIS system, which was used to collect utilization and claims data as well as other key Medicaid and CHIP program information, to keep pace with the data needed to improve beneficiary quality of care, assess beneficiary to care and enrollment, improve program integrity, and support our states, the private market, and stakeholders with key information.

The T-MSIS data set contains:

  • Enhanced information about beneficiary eligibility
  • Beneficiary and provider enrollment
  • Service utilization
  • Claims and managed care data
  • Expenditure data for Medicaid and CHIP.

Learn more in the TMSIS State Medicaid Director's Letter and T-MSIS Data Dictionary.

Below is the current T-MSIS state implementation status. There are multiple factors that have influenced the T-MSIS timeline such as: 

  • Federal technical and operational readiness, and states’ technical readiness
  • Quality and completeness of states’ data
  • States’ competing priorities (e.g. ICD-10 conversion, system replacements, expansion preparations, waivers and vendor performance etc.)

T-MSIS State Overall Progress

tmsis map

TMSIS State Overall Progress
Alabama: In Production and Current
Alaska: In Production and Current
Arizona: In Production and Current
Arkansas: In Production and Current
California: In Production and Current
Colorado: In Production and Current
Connecticut: In Production and Current
DC: In Production and Current
Delaware: In Production and Current
Florida: In Production and Current
Georgia: In Production and Current
Hawaii: In Production and Current
Idaho: In Production and Current
Illinois: In Production and Current
Indiana: In Production and Current
Iowa: In Production and Current
Kansas: In Production and Current
Kentucky: In Production and Current
Louisiana: In Production and Current
Maine: In Production and Current
Maryland: In Production and Current
Massachusetts: In Production and Current
Michigan : In Production and Current
Minnesota: In Production and Tracking to Currency
Mississippi: In Production and Current
Missouri: In Production and Current
Montana: In Production and Current
Nebraska: In Production and Current
Nevada: In Production and Current
New Hampshire: In Production and Current
New Jersey: In Production and Current
New Mexico: In Production and Current
New York: In Production and Current
North Carolina: In Production and Current
North Dakota: In Production and Current
Ohio: In Production and Current
Oklahoma: In Production and Current
Oregon: In Production and Current
Pennsylvania: In Production and Current
Rhode Island: In Production and Current
South Carolina : In Production and Current
South Dakota: In Production and Current
Tennessee : In Production and Current
Texas : In Production and Current
Utah : In Production and Current
Vermont: In Production and Current
Virginia: In Production and Current
Washington: In Production and Current
West Virgina: In Production and Current
Wisconsin: Not in Production
Wyoming : In Production and Current

T-MSIS State Overall Progress as of 05/31/2018:

  • 49 states, 1 entity, and 1 territory are in production and current (96.85%)
    • Pennsylvania CHIP entity
    • Puerto Rico territory
  • 1 states and 1 entity are in production and tracking to currency (1.38%)
    • Iowa CHIP entity
  • 1 state, 2 entities, and 1 territory are not in production (1.77%)
    • Montana TPA and Wyoming CHIP entities
    • Virgin Islands territory

T-MSIS Coding Guidance Listserv

Receive announcements as well as new and updated CMS guidance about coding information related to the Transformed Medicaid Statistical Information System (T-MSIS).

MSIS Information

The Medicaid and Statistical Information System (MSIS) used by the Centers for Medicare and Medicaid Services (CMS) to gather key eligibility, enrollment, program, utilization and expenditure data for the Medicaid and Children's Health Insurance Program (CHIP) has been decommissioned and replaced by T-MSIS.