The hospital-at-home waiver went dark for 43 days. Congress just extended it to 2030.

Since November 2020, a Medicare-certified hospital with the right federal waiver can treat an inpatient in that patient's own living room and bill Medicare exactly what it would have billed for the same stay in a hospital bed.▸ The Acute Hospital Care at Home (AHCAH) initiative waives the Medicare hospital condition of participation that requires nursing staff on premises 24 hours a day — 42 CFR 482.23(b) — and replaces it with round-the-clock remote registered-nurse coverage plus at least two in-person visits a day, by a nurse or by a paramedic under a nurse's supervision. The payment doesn't move. The staffing model does. Congress authorized the arrangement one extension at a time, and on September 30, 2025, the authorizing statute expired mid-government shutdown — taking the waiver dark for every hospital running the program.

To get approved, a hospital submits its request through CMS's waiver portal and is reviewed by a CMS team that — as of the agency's own description — currently consists of three clinicians: nurses and physicians who evaluate compliance history, staffing plans, and safety safeguards, then interview every applicant.▸ Hospitals with a track record of treating at least 25 qualifying inpatients before applying go through an expedited "Tier 1" review; everyone else goes through a fuller "Tier 2" process. As of July 24, 2024, that three-clinician team had cleared 332 hospitals across 38 states — only 54 of them (16%) with prior hospital-at-home experience. The other 84% were new to the model entirely.

CMS's own claims analysis of the top 25 MS-DRGs associated with AHCAH discharges found the program is not a general substitute for a hospital bed — it's concentrated in a narrow clinical band.▸ Respiratory conditions alone account for 36% of episodes; together with circulatory, renal, and infectious-disease diagnoses, the top four diagnostic categories make up 80% of everything AHCAH treats.

CMS built a matched comparison group — same hospitals, same MS-DRGs, same underlying clinical severity — to see what AHCAH actually changes once the bill for the inpatient stay itself is identical either way.▸ The agency's own report found the index stay ran longer at home: length of stay was significantly higher for AHCAH in 22 of the top 25 MS-DRGs, by 0.79 days on average — an 11.4% increase (p < 0.0001). But spending in the 30 days after discharge told the opposite story: significantly lower for AHCAH in 13 of the top 25 MS-DRGs, and higher in none. Averaged across the sample, 30-day post-discharge Medicare spending ran $1,640.43 lower for AHCAH patients — a 22.1% reduction (p < 0.001). CMS is careful to flag why: AHCAH patients are a hospital's own selection of the healthiest candidates for home care, so the comparison isn't a randomized trial and the agency stops short of concluding the program lowers total Medicare spending.

One place the difference shows up plainly is where patients go after they're discharged.▸ AHCAH patients were far more likely to simply go home: 58% were discharged to routine home/self-care, against 38% of the brick-and-mortar comparison group. The gap is starkest at the skilled nursing facility — the post-acute setting that runs on nursing-home labor. Only 1.2% of AHCAH patients were discharged to a SNF, versus 20% of the comparison group.

The same report sampled three months of visit logs (October–December 2023) from the hospitals running the largest share of the program.▸ In October 2023 alone, 477 AHCAH beneficiaries received an average of five in-person and 19 virtual nursing contacts a day — well above the waiver's floor of two in-person nursing visits daily — plus at least one in-person physician or advanced-practice visit and four more by video. Overall, 38% of all AHCAH visits were in person and 62% were virtual. That ratio is the whole labor bet the waiver makes: fewer bodies in the building, more remote monitoring, and enough in-person coverage to catch the patients who need to go back.

Approval isn't activation.▸ The Medicare Payment Advisory Commission's June 2024 report to Congress found that in 2022, 284 hospitals were participating in CMS's AHCAH reporting system, but only 105 of them — about 37% — ever billed a single discharge under the waiver. Those 6,189 reported 2022 discharges were less than 0.1% of all inpatient discharges nationally that year. And even among the hospitals that used it, use was concentrated: MedPAC found the busiest 26 hospitals accounted for 71% of every AHCAH discharge billed in 2022.

MedPAC's comparison of the hospitals that actually ran a program against the ones that didn't also shows who can afford to try.▸ Hospitals reporting AHCAH discharges had a median inpatient occupancy of 81%, against 61% for other IPPS hospitals — meaning the hospitals adopting a program built to relieve bed pressure were disproportionately the ones already running close to full. They were also more likely to be teaching hospitals (68% vs. 36%) and far less likely to be for-profit (2% vs. 25%). Running AHCAH, in other words, has so far been a large-system capability, not a general-purpose fix available to any hospital that wants it.

The waiver's authority has always been temporary, extended by Congress in pieces: first under COVID-19 emergency powers, then to December 31, 2024 under the Consolidated Appropriations Act, 2023, then again short-term.▸ By September 2025, the Bipartisan Policy Center counted 419 hospitals across 39 states holding an active CMS approval — up from 332 a year earlier. Then, on September 30, 2025, the underlying statutory authority — section 1866G of the Social Security Act, 42 U.S.C. § 1395cc–7 — expired as the federal government entered what became the longest shutdown in U.S. history: 43 days, October 1 through November 12, 2025.

With no statute to waive the on-site nursing requirement, CMS instructed hospitals to discharge or return AHCAH patients to brick-and-mortar beds and stopped accepting new waiver applications entirely.▸ Some hospitals had already begun moving patients back in September, anticipating that Congress wouldn't act in time. At UMass Memorial, which had run a home hospital program for four years, the medical director overseeing it told STAT News the health system was pulling a tool out of active use it needed to care for its community. The stopgap funding bill that ended the shutdown on November 12 restored the waiver's authority retroactively through January 30, 2026 — but for the 43 days in between, no hospital in the country had a live legal basis to admit a new AHCAH patient.

Congress then went further.▸ Section 6210 of the Consolidated Appropriations Act, 2026 (Public Law 119-75), signed February 3, 2026, struck the January 30, 2026 expiration date from the statute and replaced it with September 30, 2030 — a five-year extension. The same section appropriates $2,500,000 to CMS for a new, more detailed follow-up study due by September 30, 2029, this time required to examine the composition of the AHCAH care team directly, including "the types of labor used, such as contracted labor" and "the ratio of nursing staff" — the labor question CMS's first report, built only from Medicare claims, couldn't answer.

Clinical, cost, and discharge-outcome figures are drawn from CMS's own September 2024 study of the AHCAH initiative, covering claims through early 2024; concentration and hospital-characteristic figures are MedPAC's independent analysis of 2022 CMS data. Hospital and state counts carry the date they were reported, since the program has grown and shrunk around each funding lapse.