[DM/URSA-CORE] Data Mart for Patient-Months with Active Membership

  • Published on Apr 10, 2026
  • 2 minute(s) read
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Object Description

One record for each patient-month during which the patient had an active plan membership at any time.

Metadata

  • Table Name: ursa.dm_ursa_core_021
  • Layer: DATA_MART
  • Object Type: Single Stack
  • Temporal Class: Event
  • Case ID: Patient ID, Month Start Date
  • Event Date:
  • Primary Key: Patient ID, Month Start Date

Published Fields

  • Data Model Keys

    • Patient ID -- The internal database identifier (used, e.g., for joins and primary keys) for the patient. This value is typically mastered, i.e., all records for the same patient, regardless of the source data system from which that record originated, should have the same Patient ID value. (Note that while the mastered Patient ID value might resemble a local identifier used in one of the upstream data sources, this does not indicate any special priority of that source system in determining the characteristics of the patient.) (See also [URSA-CORE] Patient)
    • Primary Plan ID -- The identifier for the health insurance plan product that is the first party responsible for payment.
    • Risk Program Entity ID
    • Primary Plan Attributee Individual Provider ID
    • Primary Plan Attributee Provider Group Provider ID
    • Source ID -- The identifier for the original source data system from which the current record originated.
    • Risk Program Entity Provider ID

  • Operations Support Fields

    • Primary Plan Member Number
    • Primary Plan Attributee Provider Contract Operational ID
    • Risk Program Entity Operational ID
    • Risk Program Entity Description

  • Date Fields

    • Month Start Date -- The start date (e.g., January 1, February 1, etc.) of the month in the patient's life described by the current record.
    • Month End Date
    • Month Start Date Text YYYYMM
    • First Membership Date in Month
    • Last Membership Date in Month

  • Patient Fields

    • Patient First Name
    • Patient Last Name
    • Patient Date of Birth -- The patient's date of birth. On the Patients Natural Object, this field reflects the "best" known value for the patient available from all data sources; on other Natural Objects, e.g., MMR Member-Months, the value faithfully reflects the date of birth found on that particular type of record in the source data.
    • Patient Date of Death
    • Patient State Abbreviation
    • Patient ZIP Code 5-Digit

  • Insurance Fields

    • Is Patient Attributed -- Indicates the patient is, during the period specified by the current record, considered attributed to the Ursa client organization.
    • Is Patient Attributed with Risk -- Indicates the patient is, during the period specified by the current record, considered attributed to the Ursa client organization, and, additionally, considered qualified for inclusion in risk-based payment model calculations.
    • Primary Plan CMS Contract Number
    • Primary Plan CMS PBP Number
    • Primary Plan CMS Segment Number
    • CMS RAF Type Code -- The standard 1- or 2-character CMS Part C Risk Adjustment Factor Type Code; e.g., E = New Enrollee, I = Institutional, D = Dialysis (ESRD), CF = Community Full Dual, CP = Community Partial Dual, CN = Community Non-Dual, etc.
    • CMS RAF Score -- The patient-level total Risk Adjustment Factor (RAF) value obtained by the CMS-HCC risk model methodology and normalized so that the average value across all Medicare beneficiaries in a year is 1.0.
    • Primary Plan Attributee Provider NPI in Contract
    • Primary Plan Attributee Provider TIN in Contract

  • Provider Fields

    • Primary Plan Individual Provider Provider Description
    • Primary Plan Attributee Provider Group Provider Description

  • Metadata Fields

    • Random Integer 1 to 1000
    • Is Member on Month Start Date
    • Count Membership Days in Month
    • Membership Days as Fraction of Month
    • Is RAF Score from Source Data
    • Is RAF Score from Ursa Model

Foreign Keys

  • primary_plan_id → ursa.no_ursa_core_struct_005.plan_id
  • primary_payor_id → ursa.no_ursa_core_struct_004.payor_id
  • last_continuous_primary_payor_membership_episode_payor_id → ursa.no_ursa_core_struct_004.payor_id
  • next_continuous_primary_payor_membership_episode_payor_id → ursa.no_ursa_core_struct_004.payor_id
  • primary_plan_attributee_prov_id → ursa.no_ursa_core_prov_001.prov_id
  • empirical_attributee_primary_care_individual_prov_id → ursa.no_ursa_core_prov_001.prov_id
  • empirical_attributee_primary_care_prov_group_prov_id → ursa.no_ursa_core_prov_001.prov_id