The Coverage Gap Has a New Address

A coverage gap is a deferred bill. When a public insurance system contracts, the cost does not vanish; it migrates to the registration desk, the charity-care ledger, and the emergency department where the door is legally never locked.

Epic Research's dataset of more than 550 million U.S. encounters from January 2022 through June 2026 traces that migration. Emergency department self-pay share climbed from 5.5 percent in early 2022 to 7.6 percent by mid-2026. Inpatient rose from 1.9 to 2.6 percent. Births climbed from 0.8 to 1.3 percent. Primary care barely moved, 1.8 to 1.9, and that flatness is the finding: when renewal paperwork fails, the appointment simply does not happen, so the visit never registers as self-pay.

After the federal continuous-enrollment provision ended in March 2023, states ran staggered redeterminations, and some of the coverage loss reflects procedural lockouts, not just eligibility loss. The downstream signal is not an enrollment headline; it is a front-desk signal. In Epic Research's data, the shock arrives first in the emergency department, then the inpatient floor, then the delivery room, and barely at all in primary care. Emergency visits absorb the largest share move because that is where the uninsured are still treated; other settings move in proportion to how easy it is to get there without coverage.

The bill now lives in a different column. Hospitals carry the charity-care write-off; states carry the renewal-design failure; patients carry the registration desk. The coverage program did not shrink. Its cost just changed who writes the check.