clinicians.build · interactive · august 29, 2026

The Relocation

Capital One's Erik Tellefson told HIMSSCast the inpatient-only list “is set to go entirely by 2029,” and that hospitals charge 50%+ more than ambulatory surgery centers for the same procedure. Ten years of Medicare data says the volume really is leaving the inpatient bed. It mostly isn't going where you'd think.

Story: HIMSSCast, “Investment in ambulatory surgery centers soars,” Healthcare Finance News, August 28 2026
Data: CMS Medicare Geographic Variation Public Use File, national and state, 2014–2023

The pitch is clean and it's mostly true. Medicare has spent a decade pulling procedures off the inpatient-only list. Each one it releases can be done in a lower-cost setting. Capital is piling into ambulatory surgery centers on exactly that thesis, and the 2029 date gives it a deadline.

Below is where every standardized Medicare fee-for-service dollar actually went, 2014 through 2023 — the three settings the argument is about. Standardized means CMS has already stripped out geographic wage adjustments, so a movement in these lines is a movement in care, not in local prices.

Scrub the decade — or hit play
2023
Share of the Medicare dollar Indexed to 2014 = 100
Inpatient
Hosp. outpatient
ASC
Hospital inpatient Hospital outpatient dept. Ambulatory surgery center

Two true sentences, one chart

Leave it on share of the Medicare dollar and the ASC line is a hairline crawling along the floor. Inpatient gave up 5.0 percentage points of standardized spending between 2014 and 2023 — 28.5% down to 23.5%. ASCs absorbed 0.6 of them. Hospital outpatient departments took 5.0.

Now switch to indexed to 2014 = 100. Same numbers, and the ASC line is suddenly the fastest-growing thing on the page: +61% against outpatient's +35% and inpatient's −18%.

Neither view is a lie. One of them is the market you can raise money on. The other is the market that exists.

The procedures are leaving the inpatient bed. They are landing, overwhelmingly, in the hospital outpatient department — the same building, the same brand, the same chargemaster, one floor down. Which is precisely the outcome the 50% price gap is supposed to prevent.

And it isn't a national wave

Each dot is one state: ambulatory surgery events per 1,000 fee-for-service beneficiaries. Drag the year. Nothing about this looks like a single trend everyone is riding.

ASC events per 1,000 FFS beneficiaries · 53 states and territories
2014 2019 2023 Show all three
 

In 2023 Mississippi ran 332 ASC events per 1,000 beneficiaries. Vermont ran 43. That is a 7.7× spread inside one payment system, and it does not track illness — Mississippi and Vermont are not seven times apart on anything clinical. It tracks certificate-of-need law, physician ownership rules, and where somebody built a building. The median state sits at 164.

The blindspot in the pitch

Tellefson's 50%+ price gap is real and it is not evidence of ASC efficiency on its own. ASCs choose their patients. They screen out the comorbid, the frail, the anticoagulated and the anyone-who-might-need-an-ICU. Hospitals take those cases because they must. Comparing the two prices for “the same procedure” silently compares two different populations having it.

Asked twice on the episode what drives the differential, he deferred to an absent colleague.

The honest version of the claim: an ASC can perform a selected case for materially less than a hospital charges for the same CPT code. How much of that gap survives risk adjustment is not in this dataset, and as far as we can tell is not in any public one at the procedure level.

Where this chart is thin

⚠︎ AI-generated · not reviewed by a human · verify against the linked sources before relying on it. The 50%+ price gap, the 2029 date and the investment thesis are Erik Tellefson's statements on the linked HIMSSCast episode, not findings of this page. Every line, dot and percentage on this page is this page's own arithmetic on the public CMS Geographic Variation file, and is not a CMS analysis or investment advice.