This page is part of the ACCESS Model IG v0.9.12 DRAFT (v0.9.12: Releases Draft) based on FHIR (HL7® FHIR® Standard) R4. No current official version has been published yet. For a full list of available versions, see the Directory of published versions

Change Log

This page documents the changes between versions of the CMS ACCESS Model API Implementation Guide.

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Version 0.9.12 - DRAFT

Release Date: June 11, 2026

Major Changes

Removed codes from ACCESSeCKMDiagnosisVS and ACCESSCKMDiagnosisVS

• ACCESSeCKMDiagnosisVS - removed the following codes:
  • I12.0, I13.11, I13.2, I67.0, I67.1, I67.2, I67.3, I67.4, I67.5, I67.6, I67.7, I67.81, I67.82, I67.83, I67.841, I67.848, I67.850, I67.858, I67.89, I67.9
• ACCESSCKMDiagnosisVS - removed the following codes:
  • E08.00, E08.01, E08.10, E08.11, E08.641, E11.00, E11.01, E11.10, E11.11, E11.641, E13.00, E13.01, E13.10, E13.11, E13.641

Technical Updates

• Version bump from 0.9.11 to 0.9.12

Version 0.9.11 - DRAFT

Release Date: June 4, 2026

Major Changes

Added Clinical Exclusion value sets under the Unalignment API

• ACCESSCKMClinicalExclusionDiagnosisVS - clinical exclusions for the eCKM/CKM tracks
• ACCESSMSKClinicalExclusionDiagnosisVS - clinical exclusions for the MSK track
• ACCESSBHClinicalExclusionDiagnosisVS - clinical exclusions for the BH track

meta.profile data element now required for request parameters

• Required meta.profile data element added to:
  • ACCESSCheckEligibilityRequestParameters
  • ACCESSAlignmentRequestParameters
  • ACCESSUnalignmentRequestParameters
  • ACCESSReportDataRequestParameters

Changed Content-Type headers for requests

• Changed the Content-Type header in examples from application/fhir+json to application/json

Updated Qualifying Diagnoses value sets for each track

• Updated ACCESSeCKMDiagnosisVS, ACCESSCKMDiagnosisVS, ACCESSMSKDiagnosisVS, and ACCESSBHDiagnosisVS

Removed validation-error result from ACCESSReportDataResultVS and ACCESSReportDataResultCS

• No longer needed.

Fixed bug in Data Reporting Capability Statement

• Lipid panel LOINC code changed from 57698-3 to 18262-6 to more accurately reflect the focus of the cholesterol data

Fixed bug in uncoded questionnaires

• Extensions for the valueCoding were in the wrong place
  • Extension now is within the valueCoding instead of being a peer of valueCoding

Technical Updates

• Version bump from 0.9.8 to 0.9.11

Version 0.9.8 - DRAFT

Release Date: May 18, 2026

Major Changes

Addressed feedback from first external testing window

• Added example questionnaires to provide further guidance on how to package questionnaire response data

• Added more documentation for each of the ACCESS Model API operations to make them easier to implement

• Added new result codes for the $check-eligibility operation
  • not-eligible-clinical-exclusion - The patient has a clinical exclusion that prevents them from receiving services under the ACCESS Model.
  • not-eligible-mismatch - The patient information provided does not match the patient information on record.
• Added new result codes for the $align operation
  • not-aligned-clinical-exclusion - The patient has a clinical exclusion that prevents them from receiving services under the ACCESS Model.
  • not-aligned-mismatch - The patient information provided does not match the patient information on record.
  • not-aligned-no-switch-attestation - Participant switch request did not include switch consent attestation.
• Fixed LOINC code usage bug for lipids
  • All 57698-3 LOINC codes were replaced by 18262-6 LOINC codes
• Replaced itemWeight references with ordinalValue
  • Some servers do not support itemWeight
• Added invariant to dataBundle
  • Items reference in the ACCESSDataReportingComposition must be in the ACCESSDataReportingBundle
• Updated Getting Started section of the IG home page

Changed Structured Data Capture IG dependency

• Changed from using version 4.0.0 (STU4) to version 3.0.0 (STU3)
• Better aligns with USCoreQuestionnaireResponse version 6.1.0

More blood pressure examples

• dataBundle examples now include three individual blood pressure observations

Technical Updates

• Version bump from 0.9.6 to 0.9.8

Version 0.9.6 - DRAFT

Release Date: April 24, 2026

Major Changes

ACCESSDataReportingComposition tweaks

• Added artifacts for the Data Reporting API

Replaced average blood pressure with individual blood pressure observations

• Removed ACCESSAverageBloodPressure profile from the IG
• Updated ACCESSDataReportingComposition to reference USCoreBloodPressure instead of ACCESSAverageBloodPressure and LOINC codes for individual blood pressure observations
• Updated blood pressure examples to use USCoreBloodPressure
• Updated documentation to reflect the change

Added cannot-unalign-during-lock-in to ACCESSUnalignmentResultCS

• Patient cannot be unaligned during the 90-day lock-in period

Added required entityId query parameter to ACCESS Capability statements

• entityId required for $check-eligibility, $align, $unalign, $report-data operations

Track-based condition profiles have a fixed condition category of problem-list-item

• Condition category update made to ACCESSeCKMCondition, ACCESSCKMCondition, ACCESSMSKCondition, and ACCESSBHCondition

Changed ACCESS ID format

• New ACCESS ID format for participants now takes the form of ACCES##### (ACCES followed by 5 digits)
• Replaces previous format of ACCESS#### (ACCESS followed by 4 digits)

Changed IG path from cms.fhir.us.access to cms.fhir.us.cmmi-access-model

• More specific to the division in CMS.

Lock-in Duration

• References to 3-months changed to 90 days

Technical Updates

• Version bump from 0.9.1 to 0.9.6