Build the CMMI-HCC risk adjustment model

[sarah-tuva]

Is your feature request related to a problem? Please describe.
The CMMI-HCC risk adjustment model applies to the High Needs ACO REACH population.

In ACO REACH, risk adjustment is used to adjust expenditures for beneficiary health risk and establish
Performance Year (PY) Benchmarks. ACO REACH applies the CMS-Hierarchical Condition Categories
(HCC) prospective risk adjustment model used in the Medicare Advantage (MA) program and a new
Center for Medicare & Medicaid Innovation (CMMI)-HCC concurrent risk adjustment model. R

Describe the solution you'd like
Build a new mart to run this risk model.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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