referral note
ref_ntDefinition
ISO-11179 Definition
Clinical annotation or commentary attached to a specialist referral request, stored as ref_nt in EHR and care coordination platforms. This field contains provider-authored narrative context such as clinical history or urgency rationale. Data engineers process referral notes as unstructured text requiring NLP parsing for analytics and care gap identification workflows.
Standard Abbreviation
ref_nt
Category
Production DDL — FACT_CLINICAL_EVENT
CREATE OR REPLACE TABLE FACT_CLINICAL_EVENT (
clin_evt_key INTEGER NOT NULL -- surrogate key,
mbr_key INTEGER NOT NULL -- FK to DIM_MEMBER,
prvdr_key INTEGER NOT NULL -- FK to DIM_PROVIDER,
diag_cd VARCHAR(10) -- ICD-10 diagnosis code,
hcc_cd VARCHAR(10) -- HCC category code,
proc_cd VARCHAR(10) -- procedure code,
svc_dt DATE -- service date,
pos_cd VARCHAR(2) -- place of service,
raf_scr DECIMAL(10,3) -- RAF score,
admit_dt DATE -- admission date,
dsch_dt DATE -- discharge date,
drg_cd VARCHAR(10) -- DRG code,
los_days SMALLINT -- length of stay,
readmt_ind CHAR(1) -- readmission indicator,
load_dt TIMESTAMP_NTZ NOT NULL -- load timestamp
);
Standard Snowflake DDL for the canonical clinical table. Convert to BigQuery or Databricks →
Why This Term Matters
Clinical terms are the building blocks of risk adjustment, quality measurement, and value-based care analytics. A data engineer who understands this terminology can design schemas that correctly capture patient conditions, procedures, and encounters — enabling accurate HCC scoring, HEDIS measure attribution, and CMS reporting. Misclassifying clinical fields in a data warehouse cascades into incorrect RAF scores and failed regulatory submissions.
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