5. Data Processing and ETL Pipeline Programming Implementation
5.1 Data Extraction and Transformation (ETL)
In the era of DRG/DIP 2.0 for hospital cost management, data extraction and transformation (ETL) is a crucial step in converting raw data from various hospital business systems into data usable for cost management analysis. This process involves extracting patient treatment data from the Hospital Information System (HIS), formatting it, mapping fields, etc., to meet the needs of subsequent cost accounting and analysis.
The Hospital Information System (HIS) is the core of hospital information management, containing comprehensive information about patient treatments, such as patient basic information, treatment records, fee details, etc. When interfacing with the HIS system, data extraction can be done via APIs or through middleware databases. When using API interfaces, communication with the HIS system’s development team is required to obtain detailed API documentation, clearly understanding the request methods (e.g., GET, POST), request parameters, and the format of returned data (e.g., JSON, XML). For example, when extracting patient treatment information, if the HIS system provides an API interface at
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