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member subscriber id

mbr_subscr_id
member·Updated Jun 23, 2026

Definition

ISO-11179 Definition

The unique identifier of the primary policyholder or subscriber under whose health insurance contract a dependent member is enrolled. The subscriber ID links dependent records to the primary subscriber record and is used in coordination of benefits to establish coverage relationships, in family deductible accumulation to aggregate cost sharing across all dependents, and in claims adjudication to validate dependent eligibility under the subscriber policy. In X12 EDI 837 transactions, the subscriber ID appears in the NM109 element of the 2000B subscriber loop.

Healthcare data teams maintain subscriber-dependent linkage tables using mbr_subscr_id as the foreign key connecting dependent enrollment records to primary subscriber records for family coverage analytics and eligibility verification workflows.

Standard Abbreviation

mbr_subscr_id

Category

member

Production DDL — DIM_MEMBER

DIM_MEMBER.sql
CREATE OR REPLACE TABLE DIM_MEMBER (
    mbr_key           INTEGER        NOT NULL  -- surrogate key,
    mbr_id            VARCHAR(50)    NOT NULL  -- member identifier,
    mbr_first_nm      VARCHAR(100)             -- first name,
    mbr_last_nm       VARCHAR(100)             -- last name,
    mbr_birth_dt      DATE                     -- date of birth,
    mbr_gndr_cd       CHAR(1)                  -- gender code M/F/U,
    mbr_age           SMALLINT                 -- age in years,
    mbr_state_cd      CHAR(2)                  -- state code,
    mbr_zip_cd        VARCHAR(10)              -- zip code,
    mbr_elig_ind      BOOLEAN                  -- eligibility indicator,
    mbr_enrl_dt       DATE                     -- enrollment date,
    mbr_term_dt       DATE                     -- termination date,
    mbr_plan_cd       VARCHAR(20)              -- plan code,
    mbr_dual_elig_cd  VARCHAR(10)              -- dual eligibility code,
    load_dt           TIMESTAMP_NTZ  NOT NULL  -- load timestamp
);

Standard Snowflake DDL for the canonical member table. Convert to BigQuery or Databricks →

Why This Term Matters

Member and enrollment data governs who receives care and who pays for it — making it foundational to every downstream healthcare analytics workflow. Data engineers who understand member terminology build eligibility pipelines that prevent coverage gaps, correctly identify dual-eligible members, and support accurate risk adjustment submissions to CMS. Enrollment errors directly affect capitation payments and can trigger CMS corrective action plans.

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