adjustment start date

adj_start_dt

claims

Updated 5/16/2026

Definition

The beginning date marking when a financial modification becomes effective for a claim, remittance, or payment contract period. Used in EHR revenue cycle systems, payer adjudication platforms, and member enrollment systems to define the temporal boundary of adjustments affecting coverage periods, fee schedules, or retroactive payment corrections.

Standard Abbreviation

adj_start_dt

Database Usage

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

-- Example in SELECT
SELECT
  clm_id,
  adj_start_dt as adjustment_start_date
FROM claims;

Common uses in healthcare data

Claims adjudication and remittance processing
837P/837I/837D claim file parsing and validation
Revenue cycle management and denial analytics
CMS cost report and Medicare cost reporting
Payer contract performance and underpayment analysis

Example database column name

ISO-11179 snake_case standard

-- Recommended column name
adj_start_dt

-- Example DDL
CREATE TABLE healthcare_data (
  record_id   VARCHAR(50)   NOT NULL,
  adj_start_dt DATE,  -- adjustment 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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