HTTP Interface and External Systems for Health Insurance

Data Characteristics

Health insurance claim data originates from local medical security administration settlement systems. This data typically comes in structured XML or JSON formats. Update frequencies vary by region and policy, usually daily or weekly in batches. Key fields include patient ID, medical institution code, diagnosis and treatment item code, drug code, service fee, health insurance payment amount, out-of-pocket amount, and settlement time. Diagnosis and treatment items and drugs generally follow national health insurance catalog coding standards, but some regions may have custom codes. Data documentation, provided by health insurance departments, includes field definitions, data types, enumeration value ranges, and update rules. However, accessibility and standardization of this documentation vary, and detailed specifications may require direct interface debugging with specific health insurance systems.

Constraints Imposed by These Characteristics on "HTTP Interface and External Systems"

The geographical dispersion and inconsistent update frequencies of health insurance claim data necessitate that HTTP interfaces support multi-source configuration and flexible scheduling mechanisms. Interface standards from different health insurance systems may not be uniform. This leads to variations in API call methods (GET/POST), authentication mechanisms (e.g., token or sign fields in the Authorization header), parameter structures, and response formats. While health insurance catalog coding constrains data field standardization, non-standard codes or missing fields can occur in practice. This requires robust fault tolerance and data cleansing capabilities in the post-interface-call data processing module. Health insurance claim data often contains sensitive information, demanding high standards for data transmission security (e.g., mandatory HTTPS, data encryption) and access control. Non-standardized data documentation can increase the complexity of interface debugging and maintenance, requiring additional resources for interface adaptation and validation.

Configuration Guidelines

Configuration Item	Recommended Value	Rationale
`API_ENDPOINT_BASE_URL`	`https://api.medicare.gov/v1/settle`	Health insurance systems typically require HTTPS, and API paths often include version control.
`REQUEST_TIMEOUT_SECONDS`	`60`	Batch queries or complex calculations for health insurance data can be time-consuming. This timeout provides sufficient response time to prevent interruptions.
`AUTH_HEADER_NAME`	`X-Auth-Token`	Health insurance interfaces commonly use `token` or `sign` for authentication. This is a common custom request header name.
`RETRY_COUNT`	`3`	Network fluctuations or temporary high load on health insurance systems can cause request failures. Retries improve success rates.
`RESPONSE_PARSE_MODE`	`JSON_STRICT`	Health insurance claim data is often structured JSON or XML. Strict mode helps quickly identify non-standard responses. `XML_STRICT` is also supported.
`MAX_BODY_SIZE_MB`	`50`	Batch health insurance claim data responses can be large. Setting a reasonable limit prevents memory overflow.

Common Pitfalls

An HTTP status code of 200 is returned, but the response body contains a business error code. This leads to the system incorrectly interpreting the operation as successful because it only checks the HTTP status code and fails to parse business logic error indicators within the response body.
The request parameters lack region_code or policy_version fields. This results in the interface returning empty data or an error because health insurance interfaces often rely on specific regions or policy versions to locate data.
Diagnosis and treatment item codes returned by the health insurance interface do not match the local system's mapping. This prevents pre-screening rules from matching because health insurance catalog updates or local custom codes are not synchronized with the local mapping table in a timely manner.

Verification Steps

Call a test interface and verify that the returned HTTP status code is 200, and the code field in the response body is 0 or SUCCESS, indicating business-level success.
Retrieve at least 5 real patient health insurance claim data records. Verify that the patient_id, settlement_amount, and service_code fields conform to the expected format and content.
Simulate network latency and momentary high concurrency. Check if interface calls retry according to the RETRY_COUNT configuration and successfully retrieve data.

Note: The values provided are common starting points. Measure them against your own samples.

Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-21.