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Procedure price report

Knee replacement using a hinged implant

CPT 27445the billing code this page is about

Open knee replacement in which a hinge-type artificial joint is implanted, typically when the knee's own ligaments cannot provide stability.

Hospitals typically charge $2,715 cash for this outpatient procedure — the median across 165 hospitals that filed a usable cash price; the average of the middle 60% is $3,342. Most fall between $1,747 and $7,516 (20th–80th percentile).

Hospitals
165
States
40
Filings dated
Jun 2024 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 23, 2026

Median: half of hospitals filed less, half more — and it is a price some hospital actually filed. Average of the middle 60%: the mean of the prices between the 20th and 80th percentiles. We never publish the plain average, the lowest or the highest price: the extremes in hospital price files are chargemaster artefacts, not prices anyone pays.

What hospitals charge, from cheapest to most expensive

Cash price percentiles, outpatient, across 165 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$1,284$1,971$2,715$5,855$10,881

The most expensive tenth of hospitals charges at least 8.5× what the cheapest tenth charges ($1,284 vs $10,881).

How the prices are spread

$973 – $1,287: 15 hospitals$973$1,287 – $1,702: 9 hospitals$1,702 – $2,251: 32 hospitals$1,702$2,251 – $2,976: 21 hospitals$2,976 – $3,935: 14 hospitals$2,976$3,935 – $5,203: 18 hospitals$5,203 – $6,881: 14 hospitals$5,203$6,881 – $9,098: 13 hospitals$9,098 – $12,031: 11 hospitals$9,098$12,031 – $15,909: 2 hospitals$12,031median $2,715price bands are equal on a log scale
Hospitals per price band (149 of 165 — the bands cover the 5th to 95th percentile)
FromToHospitals
$973$1,28715
$1,287$1,7029
$1,702$2,25132
$2,251$2,97621
$2,976$3,93514
$3,935$5,20318
$5,203$6,88114
$6,881$9,09813
$9,098$12,03111
$12,031$15,9092

By state

The median cash price in each state, against the national median of $2,715.

Alaska: 1 hospital filed a usable price — fewer than 10, so no figureAKMaine: no hospital in the corpus filed a usable priceMEVermont: 3 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: no hospital in the corpus filed a usable priceNHWashington: 7 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: 3 hospitals filed a usable price — fewer than 10, so no figureIDMontana: no hospital in the corpus filed a usable priceMTNorth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureNDMinnesota: median $8,060 across 13 hospitalsMN$8,060Illinois: median $2,301 across 11 hospitalsIL$2,301Wisconsin: 1 hospital filed a usable price — fewer than 10, so no figureWIMichigan: median $1,284 across 18 hospitalsMI$1,284New York: 8 hospitals filed a usable price — fewer than 10, so no figureNYMassachusetts: no hospital in the corpus filed a usable priceMAOregon: median $2,712 across 11 hospitalsOR$2,712Nevada: 2 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 2 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: 5 hospitals filed a usable price — fewer than 10, so no figureIAIndiana: 1 hospital filed a usable price — fewer than 10, so no figureINOhio: 4 hospitals filed a usable price — fewer than 10, so no figureOHPennsylvania: 6 hospitals filed a usable price — fewer than 10, so no figurePANew Jersey: median $5,339 across 13 hospitalsNJ$5,339Connecticut: 1 hospital filed a usable price — fewer than 10, so no figureCTRhode Island: no hospital in the corpus filed a usable priceRICalifornia: 3 hospitals filed a usable price — fewer than 10, so no figureCAUtah: no hospital in the corpus filed a usable priceUTColorado: 1 hospital filed a usable price — fewer than 10, so no figureCONebraska: 3 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 2 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 1 hospital filed a usable price — fewer than 10, so no figureKYWest Virginia: 3 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: no hospital in the corpus filed a usable priceVAMaryland: no hospital in the corpus filed a usable priceMDDelaware: no hospital in the corpus filed a usable priceDEArizona: 1 hospital filed a usable price — fewer than 10, so no figureAZNew Mexico: 1 hospital filed a usable price — fewer than 10, so no figureNMKansas: 3 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 3 hospitals filed a usable price — fewer than 10, so no figureARTennessee: 1 hospital filed a usable price — fewer than 10, so no figureTNNorth Carolina: 1 hospital filed a usable price — fewer than 10, so no figureNCSouth Carolina: 3 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $2,063 across 11 hospitalsOK$2,063Louisiana: 1 hospital filed a usable price — fewer than 10, so no figureLAMississippi: 1 hospital filed a usable price — fewer than 10, so no figureMSAlabama: 2 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 7 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 1 hospital filed a usable price — fewer than 10, so no figureHITexas: 4 hospitals filed a usable price — fewer than 10, so no figureTXFlorida: 1 hospital filed a usable price — fewer than 10, so no figureFL
Cash price by state, most expensive first. National median $2,715. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Minnesota MN13$8,060+197%$2,590 – $8,060
New Jersey NJ13$5,339+97%$4,350 – $6,311
Oregon OR11$2,7120%$2,315 – $4,128
Illinois IL11$2,301−15%$973 – $3,005
Oklahoma OK11$2,063−24%$2,063 – $2,063
Michigan MI18$1,284−53%$1,284 – $2,173
New York NY8not enough hospitals filed a usable price
Georgia GA7not enough hospitals filed a usable price
Washington WA7not enough hospitals filed a usable price
Pennsylvania PA6not enough hospitals filed a usable price
Iowa IA5not enough hospitals filed a usable price
Ohio OH4not enough hospitals filed a usable price
Texas TX4not enough hospitals filed a usable price
Arkansas AR3not enough hospitals filed a usable price
California CA3not enough hospitals filed a usable price
Idaho ID3not enough hospitals filed a usable price
Kansas KS3not enough hospitals filed a usable price
Nebraska NE3not enough hospitals filed a usable price
South Carolina SC3not enough hospitals filed a usable price
Vermont VT3not enough hospitals filed a usable price
West Virginia WV3not enough hospitals filed a usable price
Alabama AL2not enough hospitals filed a usable price
Missouri MO2not enough hospitals filed a usable price
Nevada NV2not enough hospitals filed a usable price
Wyoming WY2not enough hospitals filed a usable price
Alaska AK1not enough hospitals filed a usable price
Arizona AZ1not enough hospitals filed a usable price
Colorado CO1not enough hospitals filed a usable price
Connecticut CT1not enough hospitals filed a usable price
Florida FL1not enough hospitals filed a usable price
Hawaii HI1not enough hospitals filed a usable price
Indiana IN1not enough hospitals filed a usable price
Kentucky KY1not enough hospitals filed a usable price
Louisiana LA1not enough hospitals filed a usable price
Mississippi MS1not enough hospitals filed a usable price
North Carolina NC1not enough hospitals filed a usable price
North Dakota ND1not enough hospitals filed a usable price
New Mexico NM1not enough hospitals filed a usable price
Tennessee TN1not enough hospitals filed a usable price
Wisconsin WI1not enough hospitals filed a usable price

Hospitals like yours

The same distribution cut by the kind of hospital. Hospital type and ownership come from CMS; a hospital counts as part of a system when its price file is shared with at least one other hospital under the same brand. The national median is $2,715.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care131$2,712$1,854 – $8,060
Children’s5fewer than 20 hospitals
Critical access28$2,715$1,384 – $7,908
Ownership
For-profit19fewer than 20 hospitals
Government28$2,590$2,014 – $4,606
Non-profit117$2,786$1,547 – $6,869
System affiliation
Part of a system123$3,003$1,512 – $8,060
Independent42$2,712$1,992 – $5,058

Cash price vs list price

Median list price (chargemaster)$3,561
Median cash price$2,715
Cash as a share of list, median hospital70%

At the typical hospital, asking for the cash price cuts the list price by about 30%. The share is the median of each hospital’s own cash ÷ list ratio, over hospitals that filed both — not the ratio of the two medians above.

How complete is this

165 of the 3,956 hospitals with a price file in our corpus (4%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 204 hospitals that filed this code at all gave us
Usable cash price — counted165
Cash price carrying a plausibility flag — shown on the compare tool, excluded here21
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded1
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded17
Hospitals that filed this code204

Sections not shown for this setting

  • Against Medicare: Medicare has no separately payable national outpatient (OPPS) rate for this code, so there is nothing honest to compare against.
  • Since our last snapshot: there is no earlier snapshot at least 90 days older than this one yet.

We last checked these hospitals’ price files for changes between September 4, 2026 and September 23, 2026; the figures were computed September 25, 2026 from filings loaded through September 23, 2026. The percentiles and averages use only the “counted” row.

Hospitals file this code under descriptions such as Arthroplasty Knee Hinge Prosthesis.

Method

Source
The machine-readable price files every U.S. hospital is required by CMS to publish, parsed per hospital. Nothing is surveyed, sampled or modelled.
What counts
One cash (self-pay) price per hospital for this code and setting. A hospital’s own filing can rule its number out — a placeholder, a “not applicable” note, a list price standing in for cash — and our plausibility checks can flag a price far below what every other hospital files. Both kinds are disclosed above and excluded from the statistics; on the compare tool a flagged price is still shown.
Statistics
Percentiles are discrete: each is a price some hospital filed. The average is the mean of the prices between the 20th and 80th percentiles. We never publish the plain mean, the minimum or the maximum. A state needs 10 hospitals and a segment 20 to show a figure; otherwise the row shows its count and no number. Medicare is the national unadjusted OPPS rate where one exists.
Names
Procedure names on these pages are our own plain-language titles, not the AMA’s copyrighted CPT descriptors. The code is the identity.

The full rules — sources, statistics, thresholds, limitations — are on the methodology page.

Download this page’s figures: JSON · CSV. Aggregates only — the per-hospital prices are on the compare tool.

Cite: HospitalRates.com, “Knee replacement using a hinged implant (CPT 27445) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-27445-knee-replacement-using-a-hinged-implant