References: Healthcare Fraud Patterns and Detection
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Health Care Fraud - Wikipedia - Surveys the major categories of health insurance and medical fraud in the United States, providing the definitional foundation this chapter builds on to distinguish fraud from waste and abuse.
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Louvain Method - Wikipedia - Explains the greedy modularity-optimization algorithm this chapter applies to a claims and referral graph to surface densely connected fraud rings disguised as legitimate disease cohorts.
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Anomaly Detection - Wikipedia - Covers the statistical technique of flagging observations that deviate from normal patterns, the general method this chapter applies to identify providers billing far outside their peer group's norms.
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Network Science - Albert-László Barabási and Márton Pósfai - Cambridge University Press - Credited for its widely used Chapter 9 treatment of modularity and community detection with dendrogram-based illustrations, the conceptual basis this chapter uses to explain how Louvain separates legitimate clusters from fraud rings.
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License to Steal: How Fraud Bleeds America's Health Care System - Malcolm K. Sparrow - Westview Press - Written by the Harvard scholar recognized as the leading national expert on health care fraud, credited as the first comprehensive structural analysis explaining why claim-by-claim review fails and why pattern-based detection is required.
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The Challenge of Health Care Fraud - National Health Care Anti-Fraud Association - The leading anti-fraud industry association's own estimate that fraud consumes 3-10% of health spending, the statistic this chapter cites when framing fraud as a first-order cost-containment problem.
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Exploring Fraud Detection with Neo4j & Graph Data Science - Part 1 - Neo4j Developer Blog - Walks through applying community detection to a transaction graph to uncover fragmented fraudster identities, directly illustrating this chapter's claim that fraud rings mimic legitimate network density.
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Louvain - Neo4j Graph Data Science - Neo4j Documentation - The authoritative technical reference for the Louvain algorithm's configuration and modularity-based hierarchical clustering, the specific implementation this chapter references for community detection.
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Durable Medical Equipment: Protecting Medicare and Medicaid from Fraud, Waste, and Abuse - HHS Office of Inspector General - The federal watchdog's own feature on DME fraud schemes, including billing for undelivered equipment and falsified medical necessity, matching this chapter's DME red-flag discussion.
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Fraud & Abuse Laws - HHS Office of Inspector General - Summarizes the Anti-Kickback Statute and other federal fraud laws that make the kickback schemes described in this chapter, including behavioral health patient brokering, illegal regardless of care quality.