The ability of a state to submit complete and accurate encounter data is critical to Medicaid and CHIP program analysis. This guidance document outlines the legislative background and CMS’s expectations for reporting complete and accurate encounter data in Transformed Medicaid Statistical Information System (T-MSIS).

This document outlines the challenges states have faced when reporting the state-assigned provider ID reported in the data element SUBMITTING-STATE-PROV-ID on the T-MSIS Provider file and recommends best practices for state reporting.

This guidance document outlines the challenges states have faced with provider location ID (PROV‐LOCATION‐ ID), which occurs both in each T‐MSIS Claim file at the claim header level and in multiple record segments in the Provider file, and recommends best practices for states’ reporting.

This best practice document outlines the challenges states have faced when reporting the types of managed care plans in the T‐MSIS Managed Care file record segment MANAGED‐CARE‐MAIN‐MCR00002 using the data element MANAGED‐CARE‐PLAN‐TYPE (MCR024).

This best practice document outlines the challenges states have faced with managed care plan identifiers for beneficiaries enrolled in a managed care plan in their T-MSIS ELIGIBLE file submissions and recommends best practices for states' reporting.

This best practice document outlines the challenges states have faced when reporting the types of managed care plans in the T-MSIS Eligible file record segment MANAGED-CARE-PLAN-TYPE-ELG00014 using the data element MANAGED-CARE-PLAN-TYPE.

This document outlines the challenges states have faced when reporting eligibles enrolled in an Alternative Benefit Plan (ABP) in their T-MSIS submissions and recommends guidance for states’ reporting.

This document outlines the challenges that states have faced when reporting waiver-related information [1] on the WAIVER-PARTICIPATION-ELG00012 segment and recommends best practices for accurately reporting the waiver identifier and the waiver type consistently across T-MSIS...

This document outlines the specifications for reporting the place of service in T-MSIS Other (OT) claims file. The specifications in the guidance provide a detailed explanation on how the data element should be populated to ensure that the place where a service is performed...

CMS has retired Maintenance Assistance Status (MAS) and Basis of Eligibility (BOE) and replaced them with Eligibility Group values as the principal eligibility classification coding system in T-MSIS.