U.S. CMS MARS-E v2.0 — Minimum Acceptable Risk Standards for Exchanges
SmartSuite provides the system for managing controls, evidence, mappings, assessments, and reporting. Framework text may require a separate license unless explicitly provided.
Overview
U.S. CMS MARS-Ev2.0 (Minimum Acceptable Risk Standards for Exchanges) is acybersecurity and compliance framework that establishes baselinesecurity requirements for health insurance exchanges handling federaldata. It supports organizations in safeguarding sensitive data,managing risks, and meeting federal regulatory obligations related tothe operation of health insurance marketplaces.
Developed by theCenters for Medicare & Medicaid Services (CMS), MARS-E v2.0 isused by state and federal health insurance exchanges, contractors,and related entities. The framework covers areas such as accesscontrol, incident response, risk management, data protection, andprivacy governance, aligning with federal standards like NIST SP800-53 to ensure consistency in security practices.
Organizationsimplement MARS-E v2.0 by adopting its security controls within theirinformation systems, conducting risk assessments, and maintainingcompliance documentation to support oversight and audits. Integrationwith broader risk management and compliance programs enablesorganizations to meet federal mandates while protecting sensitivehealth data and ensuring operational resilience.
Why it Matters
MARS-E v2.0 setsfoundational security and compliance standards to protect sensitivehealth data and ensure regulatory adherence in health insuranceexchanges.
Key benefitsinclude:
• Strengthen cybersecurity governance
Establishesclear requirements and oversight for managing risks and protectinghealth data within exchange environments.
• Enable stronger regulatory compliance
Aligns securitypractices with federal mandates, supporting organizations in meetingCMS and related regulatory requirements.
• Enhance audit readiness
Standardizesdocumentation and reporting, making it easier for organizations todemonstrate compliance during internal and external audits.
• Improve data protection practices
Implementscontrols that safeguard personally identifiable and protected healthinformation against unauthorized access and misuse.
• Promote operational resilience
Supportsproactive incident response and risk management to minimizedisruptions and sustain reliable access to critical healthcareservices.
How it Works
The CMS MARS-Ev2.0 framework structures its requirements into a set of controlfamilies aligned with NIST Special Publications, particularly NIST SP800-53. These control families address domains such as accesscontrol, risk assessment, incident response, and system integrity,tailored for healthcare exchanges handling sensitive data. Eachcontrol family details specific security and privacy safeguards,along with minimum baseline requirements, to ensure that federal andstate health exchanges maintain acceptable levels of risk.
In practice,organizations implement CMS MARS-E by mapping these security controlsto their own environments, conducting formal risk assessments, andintegrating the controls into daily operations. Compliance teamsreview their processes against MARS-E standards, document evidence ofcontrol effectiveness, and regularly monitor system configurations tomeet ongoing governance and regulatory requirements. Audit activitiesand periodic reviews help ensure sustained alignment with both CMSand broader healthcare compliance obligations.
With SmartSuite,organizations can operationalize CMS MARS-E through features such aspre-built control libraries, centralized policy governance, and riskregisters. SmartSuite enables continuous compliance tracking,structured evidence collection, and remediation workflows, supportingaudit readiness. Reporting dashboards provide organizations withvisibility into compliance status and help monitor security practicesacross the enterprise.
Key Elements
• Security Control Families
Organizesindividual safeguards and technical requirements into a set ofdistinct control groupings.
• Access Management and Authentication
Specifiesrequirements for user identification, authentication mechanisms, andlogical access restrictions.
• Risk and Compliance Processes
Describessystematic procedures for risk assessment, compliance tracking, anddocumentation review.
• Incident Response Structure
Definesprotocols for coordinating, reporting, and addressing informationsecurity incidents.
• Data Protection and Privacy
Establishesguidelines for safeguarding sensitive information and ensuringprivacy throughout handling and storage.
• Governance and Policy Oversight
Outlines roles,responsibilities, and accountability for managing security policiesand continual program oversight.
Framework Scope
U.S. CMS MARS-Ev2.0 is used by state and federal health insurance exchanges,contractors, and related entities responsible for handling federalhealth data. The framework governs information systems andenvironments processing sensitive healthcare information, and iscommonly implemented when meeting federal regulatory obligations,improving data protection, and supporting compliance oversight andoperational assurance programs.
Framework Objectives
U.S. CMS MARS-Ev2.0 defines cybersecurity and compliance objectives for healthinsurance exchanges managing federal data.
• Safeguard sensitive health information through robust securitycontrols and data protection
• Strengthen governance and oversight for regulatory complianceand risk management
• Enhance operational resilience against cybersecurity threats andvulnerabilities
• Support adherence to federal standards and regulatoryrequirements for health exchanges
• Improve audit readiness by maintaining comprehensive compliancedocumentation
• Promote continuous risk assessment and effective incidentresponse capabilities CMS MARS-E v2.0 aligns closely with NIST SP800-53 and the NIST Cybersecurity Framework, providing security andprivacy controls tailored for U.S. healthcare exchanges.Organizations implement MARS-E to meet federal regulatory compliancerequirements for handling protected health information, particularlyto support CMS, HIPAA, and FedRAMP obligations in health ITenvironments.
Common Framework Mappings
Organizationsmap CMS MARS-E v2.0 to other well-known security frameworks tostreamline compliance processes, ensure robust risk management, andfacilitate alignment with overlapping federal, healthcare, andindustry standards.
Mappedframeworks include:
CIS CriticalSecurity Controls
FedRAMP SecurityAssessment Framework
HIPAA SecurityRule
HITRUST CSF
ISO/IEC 27001
NISTCybersecurity Framework (CSF)
NIST SP 800-53
SOC 2 Compliance/ Assurance Standard
- ClassicifationCategoryData Protection & PrivacyDomainRisk ManagementFramework FamilyNIST Special Publications
- Regulatory ContextTypeControl FrameworkLegal InstrumentStandardSectorHealthcare SectorIndustryInsurance
- Region / PublisherRegionNorth AmericaRegion DetailUnited StatesPublisherCenters for Medicare & Medicaid Services (CMS)
- VersioningVersionv2.0Effective DateSeptember 23, 2015Issue DateNovember 10, 2015
- AdoptionAdoption ModelRegulatory ComplianceImplementation ComplexityHigh
- Official ReferenceOpen Link in New TabSource
License included / downloadable: Yes
CMS MARS-E v2.0 is publicly available for download from the CMS website. License included with platform
How SmartSuite Supports CMS MARS-E v2.0
Manage healthcare exchange security and privacy compliance by organizing CMS MARS-E controls, tracking system safeguards, and maintaining evidence supporting federal security and privacy requirements.
MARS-E Control Library
Structure CMS MARS-E security and privacy controls with mapped responsibilities and implementation tasks.
System Security and Privacy Governance
Track policies, procedures, and system safeguards protecting healthcare exchange data.
Risk Assessments and Authorization Management
Manage risk assessments, authorization activities, and ongoing system security reviews.
Vulnerability and Incident Management
Track vulnerability findings, remediation activities, and incident response workflows affecting exchange systems.
Vendor and System Integration Oversight
Monitor security requirements and compliance evidence for partners supporting healthcare exchange operations.
CMS Security Assessment Readiness Reporting
Provide dashboards showing control coverage, remediation progress, and readiness for CMS security assessments.
Related frameworks
FedRAMP standardizes security requirements to assess, authorize, and continuously monitor cloud services that handle U.S. federal data.
ISO/IEC 27001:2022 is an international ISMS standard that helps organizations manage information security risks and protect data.
ISO/IEC 27002:2022 provides best-practice information security controls to help organizations select, implement, and manage protections for information assets.
NIST Cybersecurity Framework (CSF) v2.0 is a risk-based framework that helps organizations manage and reduce cybersecurity risks.
NIST SP 800-171 defines security requirements for protecting Controlled Unclassified Information (CUI) in nonfederal systems and organizations.
Frequently Asked Questions For U.S. CMS MARS-E v2.0 (Minimum Acceptable Risk Standards for Exchanges)
MARS-E v2.0 is used to establish minimum security and privacy requirements for health insurance exchanges that process, store, or transmit federal data. Its primary goal is to protect sensitive health information and ensure compliance with federal cybersecurity mandates in the operation of health insurance marketplaces.
Yes, MARS-E v2.0 compliance is mandatory for state and federal health insurance exchanges and any entities, contractors, or business associates that handle federal health data on their behalf. Adherence is required to meet regulatory obligations mandated by the Centers for Medicare & Medicaid Services (CMS).
The scope of MARS-E v2.0 covers all information systems, processes, and entities involved in the collection, storage, processing, or transmission of federal health data within health insurance exchanges. This includes internal systems, third-party vendors, and any infrastructure supporting exchange operations.
MARS-E v2.0 aligns with NIST SP 800-53 and contains control families addressing access control, risk assessment, incident response, security training, system integrity, and privacy governance. Key artifacts include system security plans (SSPs), risk assessments, policies and procedures, incident response plans, and compliance documentation.
Organizations implement MARS-E v2.0 by mapping required security controls to operational processes, developing policies to address each control, and conducting regular risk assessments. Implementation involves technical, procedural, and administrative safeguards along with ongoing monitoring and documentation of compliance activities.
MARS-E v2.0 is closely aligned with federal standards like NIST SP 800-53, sharing similar control structures, terminology, and security objectives. It is tailored specifically for health insurance exchanges and provides additional privacy and risk protection requirements relevant to the federal health data environment.
Maintaining MARS-E v2.0 compliance requires periodic internal and external risk assessments, continuous monitoring of security controls, timely remediation of security gaps, and up-to-date documentation. Organizations must also prepare for independent audits and provide evidence of control effectiveness to regulatory bodies.
SmartSuite supports MARS-E v2.0 compliance by providing centralized control management, automated risk and issue tracking, and streamlined evidence collection. The platform enables organizations to manage compliance workflows, prepare for audits, and generate real-time reports on MARS-E controls, ensuring comprehensive oversight and audit readiness.
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