CareFirst’s lawsuit accusing Maryland insurance brokers of operating a multimillion-dollar health insurance fraud scheme faces a threshold challenge over when the insurer knew, or should have known, it was suffering financial losses.

Defendants Avraham Rappaport and others have asked a Maryland federal court to dismiss the case, arguing that CareFirst waited too long to bring federal RICO and state-law claims. Their memorandum points to the insurer’s own allegations and internal records, which they say show CareFirst had information about suspicious enrollment and claims activity years before filing suit.

According to the filing, CareFirst began investigating rising costs in its individual under-65 business in March 2022, initially focusing on catastrophic claims. Enrollment reviews conducted over the following months allegedly found that affected members shared the same broker. Claims data also showed dozens of members receiving medical care exclusively outside the areas where they claimed to live.

Those details matter to claims and special investigation professionals because the dispute centers partly on what claims data can establish and when. The defendants argue that CareFirst did not need to understand the entire alleged scheme for the limitations period to begin. They contend that evidence of financial injury tied to potentially false insurance applications was enough to put the insurer on notice.

CareFirst alleges the scheme operated from at least 2018 through late 2022. According to its complaint, the defendants enrolled people living outside Maryland, including individuals overseas, in plans intended for Maryland residents. The insurer alleges false residential addresses and supporting documents were used to establish eligibility, allowing members to obtain coverage through CareFirst’s nationwide provider network, including treatment from costly specialty providers.

The insurer says it conclusively identified unusual claims associated largely with policies sold by the defendants by late 2022. The defendants contend that CareFirst’s earlier investigative activity is enough to undermine the timeliness of its claims. They cite a four-year limitations period for federal civil RICO claims and Maryland’s general three-year period for civil actions.

For claims organizations, the dispute highlights the importance of documenting when potentially fraudulent patterns are first detected, when an investigation begins and what information is known at each stage. Claims analytics may uncover suspicious activity, but those discoveries can also become evidence in later litigation about when an insurer had sufficient notice of a potential loss or cause of action.

The motion to dismiss does not determine whether the alleged fraud occurred. The immediate question is whether CareFirst filed its lawsuit within the applicable limitations periods, an issue that could determine whether the insurer gets to pursue the underlying allegations at all.