Validate invoices against clinical documentation, generate audit-ready summaries, and reduce disputes — without replacing human decision-making.
Maps submitted procedure codes and line items against clinical documentation to surface discrepancies before manual review.
Scores case files against minimum dataset requirements, flagging missing, incomplete, or internally inconsistent records.
Identifies complication patterns, readmission risk indicators, and escalation triggers for structured specialist review.
Precision in positioning matters. The following boundaries define the product's legitimate scope.
Four structured steps from case intake to audit-ready export.
Upload case file: invoice, clinical record, referral documentation.
Rules engine and model signals check consistency, completeness, and anomalies.
Qualified claims specialist reviews flags with full audit trail context.
Structured audit-decision report exported as PDF or JSON for records.
Part of the Buiten ecosystem for cross-border healthcare governance
BuitenClaims is a modular, payer-side audit assistance platform. Each module generates structured signals to support qualified human reviewers — not to replace them.
Validates that submitted case files meet the minimum documentation threshold before full review begins. Flags missing records, incomplete referral chains, and structural gaps in the submission package.
Cross-references procedure codes, DRG assignments, and billed line items against clinical notes, operative records, and discharge summaries. Surfaces alignment gaps for human specialist review.
Applies configurable rules and model signals to individual invoice line items. Detects statistical outliers, duplicate billing patterns, and items that deviate from jurisdiction-specific reference benchmarks.
Produces a structured integrity score across five dimensions: completeness, internal consistency, temporal coherence, signatory validity, and cross-document alignment. Each dimension is individually auditable.
Identifies complication indicators, unplanned readmission patterns, and escalation criteria that require specialist governance review. Does not diagnose — surfaces documented signals from the clinical record.
Generates a structured, audit-ready report summarising all module outputs. Available as PDF for archival and as JSON for integration with existing claims management systems.
Structured overview of the case: patient journey, submitted procedures, provider context, and cross-border jurisdiction flags.
Each flag includes a plain-language explanation, the source data point that triggered it, and a severity classification.
Every signal is anchored to a specific document, page, or data element — enabling reviewers to verify independently.
Recommends a triage level: routine, elevated, or specialist escalation. The final decision remains with the human reviewer.
See the product in action in the sandbox prototype
Four structured steps. Full explainability. Human oversight at every decision point.
Submit a case file via the secure web interface or structured API. A case file typically contains: the submitted invoice, clinical documentation (operative notes, discharge summary, imaging reports), referral records, and provider-side identifiers.
BuitenClaims accepts structured JSON payloads and PDF document bundles. Integration with existing claims management systems is available via documented API. All data is handled under strict GDPR-compliant data minimisation principles.
The validation engine runs two parallel processes. First, a deterministic rules layer applies jurisdiction-configured thresholds, minimum dataset requirements, and known billing integrity rules. Second, model signals are applied to detect statistical patterns, anomalies, and documentation inconsistencies that fall outside the deterministic ruleset.
Both layers produce explicit, auditable outputs. No signal is generated without a referenced source data point. The engine does not make decisions — it produces structured, ranked observations for human review.
BuitenClaims is designed as decision support — the human reviewer is the decision-maker. A qualified claims specialist reviews the structured flag report, verifies signal references against source documents, and exercises professional judgement on each flagged item.
The platform provides a structured review workspace where specialists can annotate flags, record their reasoning, and escalate to medical or legal reviewers as appropriate. Every action is logged to a tamper-evident audit trail.
Human oversight is not optional. No claim decision is recorded without specialist confirmation.
Upon completion of specialist review, a structured audit decision support report is generated. The report documents: all signals identified, the specialist's recorded review actions, evidence references for each flagged item, the final triage determination, and a complete case audit trail.
Reports are exported as PDF for archival and dispute resolution, and as JSON for integration with claims management systems, reinsurance reporting, and regulatory submissions.
Specific claims review scenarios where documentation complexity, cross-border context, or dispute risk make structured audit support essential.
Elective procedures performed across jurisdictions — orthopaedic, cardiac, ophthalmic — involve heterogeneous documentation standards, different coding systems, and provider networks operating under non-domestic governance frameworks. Manual review is time-intensive and difficult to standardise.
Cross-referencing of procedure codes against local and receiving-country clinical records; minimum dataset completeness for cross-border reimbursement; consistency between referral documentation and actual billed procedures; provider credentialing signal.
Structured consistency report; documentation completeness score; jurisdiction comparability flag; recommended review level for specialist escalation.
Implantable device claims are a high-value audit area. Billed device costs frequently exceed reference price benchmarks, and documentation of device selection rationale, usage confirmation, and implant registration is inconsistently provided.
Line-item device cost against configurable benchmark ranges; device identifier (UDI) presence in clinical documentation; implant use confirmation in operative records; reference pricing deviation flags.
Device cost anomaly flag with reference range; documentation presence check; operative confirmation signal; priority flag for specialist cost review.
Unplanned readmissions following elective procedures represent both clinical and financial risk. Determining whether a readmission was clinically indicated, preventable, or attributable to the original provider requires careful documentation review across two or more separate episode records.
Temporal proximity of readmission to primary procedure; complication indicator codes in the readmission record; clinical narrative consistency between primary discharge and readmission admission documentation; duplicate billing signals across episodes.
Complication governance signal; episode linkage analysis; readmission attribution flag; escalation recommendation for clinical governance review.
When a payer disputes a claim, the burden of structured, evidence-based documentation falls on the claims team. Ad hoc review notes and informal query records are insufficient for formal dispute or arbitration proceedings.
Full re-run of validation engine across disputed claim; evidence anchoring for each flagged item; specialist review annotation retrieval; audit trail completeness verification.
Formally structured dispute-support report (PDF); complete audit trail export (JSON); evidence-referenced flag summary suitable for legal or arbitration use.
BuitenClaims is built for regulated environments. Every design choice — from data handling to decision logic — reflects the requirements of healthcare payer governance and European data regulation.
Only data elements required for the specific validation function are processed. Identifiable patient data is pseudonymised at intake. Data retention policies are configurable per jurisdiction and contractual requirement. BuitenClaims does not retain processed case data beyond the agreed retention window.
Access to case data, review interfaces, and export functions is gated by configurable role assignments. Typical roles include: intake operator, claims reviewer, senior specialist, compliance officer, and API service account. No cross-role data access without explicit authorisation. All role assignments are logged.
Every system action — file upload, validation run, flag acknowledgement, reviewer annotation, export event — is recorded to a tamper-evident, append-only audit log. Logs are exportable for internal compliance review and external audit purposes. Log integrity is verifiable.
The system architecture enforces human oversight. No claim decision is recorded without a qualified specialist review action. The validation engine produces signals and flags — it does not produce decisions. Reviewer identity and review timestamp are embedded in every exported report.
Every flag produced by the validation engine is accompanied by: the specific rule or model signal that triggered it; the source data element that is in question; a plain-language explanation; and a severity classification. There are no black-box outputs. Reviewers can verify every signal independently against source documentation.
BuitenClaims does not approve, deny, or adjudicate claims. It does not produce a recommendation to pay or reject. It produces structured audit support signals for qualified human decision-makers. This boundary is architectural, not merely policy — the system has no approval or denial output state.
Security documentation
Full security architecture documentation, data processing agreements, and penetration testing records are available to qualified institutional prospects under non-disclosure agreement.
Buiten is a European health data infrastructure initiative building the operational layer for cross-border healthcare governance. The ecosystem consists of four interconnected modules, each addressing a distinct structural challenge in the cross-border care pathway.
Buiten does not attempt to impose a single documentation or coding standard across diverse healthcare systems. Instead, it builds the structured comparability layer that allows different systems to be understood in relation to one another — preserving local clinical autonomy while enabling meaningful cross-jurisdiction audit and governance.
The core platform layer. Provides the shared data infrastructure, identity, and API framework that connects the ecosystem modules.
buiten.ai →Provider compliance and quality signalling. Generates structured quality scores for healthcare providers operating in or serving cross-border patient populations.
buitenscore.com →Referral continuity and care pathway documentation. Supports structured referral records and continuity-of-care documentation across institutional and national boundaries.
buitenarts.com →Payer-side audit decision support. Validates invoices against clinical documentation and generates structured, explainable signals for qualified human claims reviewers.
Current moduleBuitenClaims is explicitly designed for payer and insurer operations. It is not a provider-facing tool, not a patient-facing service, and not a medical tourism platform. Its sole function is to support the claims review and audit process on the payer side of the cross-border care transaction.
The module is built to operate within existing claims workflows — augmenting, not disrupting, the expertise of qualified claims professionals. Institutions retain full control of decision-making, data governance, and audit processes. BuitenClaims provides the structured, explainable signal layer that makes those processes faster, more consistent, and more defensible.
BuitenClaims is available for qualified payers, insurers, reinsurers, and health system procurement teams. Request a demonstration, a scoped pilot proposal, or security documentation.
Security documentation available under NDA upon request.
Qualified institutional enquiries receive a response within 2 business days. We do not accept unsolicited sales or partnership enquiries via this form.
An initial scoping call to understand your claims review context. A tailored demonstration of relevant modules. A pilot proposal with defined scope, data handling terms, and integration pathway.
Full security architecture documentation, DPA templates, and penetration testing records are available to serious institutional prospects under mutual non-disclosure agreement.
Case-file validation & audit report generation — sandbox environment for evaluation purposes.
This prototype environment is for evaluation and demonstration purposes only. It is not connected to production infrastructure. Do not submit identifiable or real patient information under any circumstances. Use only synthetic or anonymised test data.
BuitenClaims produces structured audit signals and recommendations for qualified human reviewers. It does not approve, reject, or adjudicate claims. Every output requires specialist review before any decision is recorded.
All outputs from this system — including in the prototype environment — are preliminary signals intended to support, not replace, qualified human judgement. Do not act on prototype outputs in any operational context.
The sandbox environment allows you to upload a synthetic case file and receive a structured validation output, demonstrating the full module workflow.
Start demo →The production environment — with full data governance, role-based access, and institutional API integration — is available to qualified payers under a formal pilot agreement.