{
  "name": "ms-drg-grouper-mcp",
  "title": "HealthMesh · MS-DRG Definitions & Grouper MCP",
  "version": "0.1.1",
  "description": "CMS MS-DRG Version 44 (FY 2027, effective 2026-10-01): DRG definitions (title, MDC, medical/surgical, severity family and the CMS grouper logic formula with its principal-diagnosis and procedure code lists), CC/MCC status of ICD-10-CM codes with principal-diagnosis CC exclusions, and an estimated DRG assignment for a claim computed by interpreting the CMS grouper reference tables. Estimates do not replace the CMS GROUPER software.",
  "healthmesh_domain": "Codes & Terminology",
  "datasets": [
    "CODE-11"
  ],
  "mcp_endpoint": "https://ms-drg-grouper.healthmesh.ai/mcp",
  "transport": "Streamable HTTP (stateless, JSON responses)",
  "authorization": "none",
  "auth_mode": "off",
  "docs": "https://github.com/HendrikK/healthmesh/tree/main/servers/ms-drg-grouper-mcp#readme",
  "contact": "hendrik.kleine@gmail.com",
  "data_source": {
    "name": "CMS ICD-10 MS-DRG Grouper V44.0 reference tables (FY 2027)",
    "url": "https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software",
    "license": "U.S. Government work (public domain); CMS MS-DRG/MDC titles and grouper logic only",
    "refresh": "bundled; rebuild when CMS posts a new MS-DRG version (October and April); weekly GitHub Actions check"
  },
  "tools": [
    {
      "name": "msdrg_get_definition",
      "title": "Get an MS-DRG definition",
      "description": "Returns an MS-DRG's CMS title, MDC, type (MED/SURG), severity family (base DRG and sibling DRGs split by MCC/CC), and the CMS V44 grouper logic formula with every attribute explained. With include_code_lists=true it also lists the ICD-10-CM principal-diagnosis codes and ICD-10-PCS procedure codes behind each formula attribute (codes only; capped by max_codes per list with *_total counts). FY 2027 (V44) only."
    },
    {
      "name": "msdrg_get_cc_mcc",
      "title": "CC/MCC status of ICD-10-CM codes",
      "description": "Returns the MS-DRG V44 severity level (MCC, CC or NON-CC) of each ICD-10-CM code as a secondary diagnosis and, when principal_dx is given, whether the principal diagnosis excludes it (CMS CC exclusion list, Appendix C). Also flags codes that are MCC only when the patient is discharged alive and codes in a hospital-acquired condition (HAC) group. FY 2027 only."
    },
    {
      "name": "msdrg_find_drgs",
      "title": "Find candidate MS-DRGs and estimate the grouped DRG",
      "description": "For a principal diagnosis (and optional secondary diagnoses, ICD-10-PCS procedures, sex, age and discharge status) returns the MDC, the candidate DRGs whose logic uses the principal diagnosis, and an estimated_drg computed by interpreting the CMS MS-DRG V44 grouper tables (pre-MDC, MDC hierarchy, procedure clusters, CC/MCC exclusions and suppression). Simplified: does not replace the CMS GROUPER software; HAC handling is simplified and Medicare Code Editor edits are not applied."
    },
    {
      "name": "msdrg_describe_dataset",
      "title": "Describe the MS-DRG dataset",
      "description": "Version, effective dates, counts, MDC list, sources and limitations of this MS-DRG server."
    }
  ]
}