Copayment

A fixed dollar amount paid by a health plan member at the point of service for a covered healthcare service or prescription. Copayments do not count toward the deductible in most plans but may count toward the out-of-pocket maximum. Common in HMO, PPO, and Medicare Advantage benefit designs.

ISO-11179 snake_case standard

-- Recommended column name
copay

-- Example DDL
CREATE TABLE healthcare_data (
  record_id   VARCHAR(50)   NOT NULL,
  copay        VARCHAR(100),  -- Copayment (max 100 chars)
  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.

Claims data is the financial backbone of the US healthcare system, and understanding claims terminology is essential for building accurate revenue cycle and reimbursement analytics. Data engineers who know this terminology can correctly parse 837 transactions, identify adjudication errors, and model denial patterns that represent real revenue recovery opportunities. A single misunderstood claims field can result in millions in underpayments identified only after external audits.

• 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
• Snowflake claims data mart design with adjudication and remittance fact tables
• Epic Resolute and Cerner Revenue Cycle claims data extraction and normalization
• Databricks Delta Lake incremental load pipelines for high-volume 837 claim processing

• Duplicate claims are endemic in raw 837 feeds — deduplicate on a composite key of (claim_id, service_date, billed_amount, provider_npi) before loading into your Snowflake or Databricks claims data warehouse.
• ICD-10-PCS procedure codes are often confused with ICD-10-CM diagnosis codes in source data — validate code format and route to the correct column based on claim loop position (loop 2300 vs. 2400).
• Adjudication and paid date sequencing errors occur due to batch processing lag — enforce a pipeline rule that adjudication_dt ≥ service_dt and paid_dt ≥ adjudication_dt as a quality check before reporting.