comorbidity start date

comor_start_dt

general

Updated 3/30/2026

Definition

The beginning date value for a coexisting medical condition. Used to track temporal information related to comorbidity start date. This field is commonly used in electronic health records (EHR), healthcare information systems (HIS), and clinical data warehouses for comorbidity management and reporting.

Standard Abbreviation

comor_start_dt

Database Usage

-- Example column naming
CREATE TABLE claims (
  clm_id VARCHAR(50),
  comor_start_dt DATE,  -- comorbidity start date (date only, no time)
  ...
);

-- Example in SELECT
SELECT
  clm_id,
  comor_start_dt as comorbidity_start_date
FROM claims;

Common uses in healthcare data

Healthcare data warehouse schema design and modeling
Interoperability and cross-system data exchange
ETL pipeline development and orchestration
Master data management (MDM) programs
Analytics and business intelligence reporting

Example database column name

ISO-11179 snake_case standard

-- Recommended column name
comorbidity_start_date

-- Example DDL
CREATE TABLE healthcare_data (
  record_id   VARCHAR(50)   NOT NULL,
  comorbidity_start_date DATE,  -- comorbidity start date (date only, no time)
  created_dt  TIMESTAMP     NOT NULL DEFAULT NOW()
);

Column names follow the ISO-11179 naming convention: lowercase, underscore-separated, using the standard abbreviation as a prefix where applicable.

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