Reference and Traceability for Medical Insurance Settlement

Data Characteristics for This Category

Medical insurance settlement regulations draw from diverse data sources. These primarily include policy documents, implementation rules, fee schedules, drug catalogs, and treatment catalogs issued by national and local medical insurance bureaus. Documents are typically in PDF, Word, or Excel formats. Core data may be available as structured databases or APIs. Policy documents update frequently, potentially quarterly or annually, with ad-hoc revisions possible. Document structures are complex, containing specialized terminology, clause numbers, calculation formulas, and appendix tables. Fields and units include medical service item codes (e.g., ICD-10, CPT), generic drug names, dosages, specifications, payment ratios (percentage), price limits (yuan), and deductibles (yuan). Precision requirements are extremely high.

Constraints Imposed by These Characteristics on "Reference and Traceability"

The complexity and high update frequency of medical insurance settlement data sources require a flexible reference and traceability mechanism. This mechanism must adapt to various file types and support version management. The coexistence of structured data and unstructured documents means references must point to the original text and locate specific clauses, paragraphs, or table cells. For example, a reference to a drug payment ratio must specify its source as "Page X, Clause Y of the XXX Province Basic Medical Insurance Drug Catalog, published on [Date]." The precision of fields and units mandates numerical accuracy verification during tracing to prevent misjudgments due to unit confusion or incorrect values. Frequent policy adjustments mean the system must quickly update its knowledge base. It also needs to mark or archive old version references. This ensures answers are always based on the currently effective policy while allowing queries for historical policy basis.

Configuration Strategy

Configuration Item	Suggested Value	Rationale for This Value
`chunkOverlapRatio`	`0.15`	Policy clauses have strong interdependencies; appropriate overlap ensures complete context and avoids misinterpretation.
`Chunk size` (Chunk Length)	`800–1200 characters` (characters)	Medical insurance policies have high information density per item; longer chunks help capture complete clause semantics, improving recall accuracy.
`Similarity threshold` (Similarity Threshold)	`0.75`	Medical insurance inquiries demand high accuracy; a high threshold filters out irrelevant recall results, reducing noise.
`Recall count` (Number of Retrieved Items)	`Top 5 entries` (top 5)	Balances response speed with information coverage, ensuring sufficient relevant policy clauses are retrieved.
`Knowledge Base Versioning Strategy`	`timestamp + policy version number`	Medical insurance policies update frequently; combining version numbers and timestamps allows precise traceability to specific effective versions.
`Reference Link Format`	`File Path#page number#ParagraphID` (file path#page number#paragraph ID)	Medical insurance documents are complex; precise page and paragraph location is needed to support quick manual verification.

Three Common Mistakes

The policy document version cited in the answer does not match the currently effective version. This happens when the knowledge base update mechanism fails to synchronize newly released medical insurance policy documents in time. For example, a CRON task to regularly pull data from the medical insurance bureau's official website might not be configured.
Clicking a reference link fails to navigate to the specific location in the original text. The link either points only to the beginning of the file or displays "page not found." This occurs when paragraph ID or anchor information is not correctly generated during text segmentation. For example, the PDF parser might not have OCR post-processing configured.
The answer cites a policy that has been abolished or revised. This happens when the knowledge base does not effectively mark or archive old policy versions, leading the system to retrieve outdated information. For example, the is_active field might not be correctly maintained.

How to Verify Configuration

For 10 randomly selected medical insurance settlement questions, verify that the policy document version cited in the answer matches the official latest published version.
Check all reference links. Ensure that clicking them precisely navigates to the corresponding page and specific paragraph in the original text (e.g., the URL contains #page=X&text=Y).
Enter questions about abolished or revised policies. Verify that the system correctly identifies and states that the policy is no longer valid, or cites the latest effective alternative policy.
When answering questions about specific expense items, verify that the system accurately cites policy clauses containing ICD-10 or CPT codes.

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.