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Procedure price report · Arthroplasty knee

Partial knee replacement, one side of the joint

CPT 27446the billing code this page is about

Open replacement of the worn surfaces on only the inner or only the outer half of the knee with artificial parts.

Hospitals typically charge $6,002 cash for this outpatient procedure — the median across 716 hospitals that filed a usable cash price; the average of the middle 60% is $8,091. Most fall between $2,134 and $19,470 (20th–80th percentile).

Hospitals
716
States
50
Filings dated
Mar 2023 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 24, 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 716 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
$1,641$2,513$6,002$16,431$29,544

The most expensive tenth of hospitals charges at least 18× what the cheapest tenth charges ($1,641 vs $29,544).

How the prices are spread

$1,201 – $1,711: 40 hospitals$1,201$1,711 – $2,438: 97 hospitals$2,438 – $3,475: 72 hospitals$2,438$3,475 – $4,952: 83 hospitals$4,952 – $7,057: 64 hospitals$4,952$7,057 – $10,056: 26 hospitals$10,056 – $14,331: 76 hospitals$10,056$14,331 – $20,422: 104 hospitals$20,422 – $29,103: 45 hospitals$20,422$29,103 – $41,474: 39 hospitals$29,103median $6,002price bands are equal on a log scale
Hospitals per price band (646 of 716 — the bands cover the 5th to 95th percentile)
FromToHospitals
$1,201$1,71140
$1,711$2,43897
$2,438$3,47572
$3,475$4,95283
$4,952$7,05764
$7,057$10,05626
$10,056$14,33176
$14,331$20,422104
$20,422$29,10345
$29,103$41,47439

Against Medicare

Medicare pays (OPPS 2026, national rate)$13,117
Median cash price$6,002
Cash as a multiple of Medicare0.46×

The Medicare figure is the national unadjusted OPPS rate for this code — what Medicare itself pays a hospital before local wage adjustment. It is a benchmark, not a price anyone is charged.

By state

The median cash price in each state, against the national median of $6,002.

Alaska: 4 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 6 hospitals filed a usable price — fewer than 10, so no figureMEVermont: median $1,954 across 10 hospitalsVT$1,954New Hampshire: median $2,066 across 11 hospitalsNH$2,066Washington: median $2,627 across 20 hospitalsWA$2,627Idaho: median $15,889 across 15 hospitalsID$15,889Montana: median $3,489 across 10 hospitalsMT$3,489North Dakota: 2 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: median $5,739 across 28 hospitalsMN$5,739Illinois: median $2,682 across 20 hospitalsIL$2,682Wisconsin: median $6,002 across 36 hospitalsWI$6,002Michigan: median $4,432 across 36 hospitalsMI$4,432New York: median $15,226 across 54 hospitalsNY$15,226Massachusetts: 2 hospitals filed a usable price — fewer than 10, so no figureMAOregon: median $3,347 across 23 hospitalsOR$3,347Nevada: 7 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 6 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 3 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $2,852 across 39 hospitalsIA$2,852Indiana: median $5,158 across 23 hospitalsIN$5,158Ohio: median $4,454 across 22 hospitalsOH$4,454Pennsylvania: median $15,086 across 16 hospitalsPA$15,086New Jersey: median $14,242 across 33 hospitalsNJ$14,242Connecticut: 5 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 1 hospital filed a usable price — fewer than 10, so no figureRICalifornia: median $20,093 across 38 hospitalsCA$20,093Utah: 1 hospital filed a usable price — fewer than 10, so no figureUTColorado: median $18,838 across 12 hospitalsCO$18,838Nebraska: median $3,497 across 18 hospitalsNE$3,497Missouri: median $10,874 across 15 hospitalsMO$10,874Kentucky: 8 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: median $3,169 across 19 hospitalsWV$3,169Virginia: median $27,224 across 12 hospitalsVA$27,224Maryland: 3 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 1 hospital filed a usable price — fewer than 10, so no figureDEArizona: 9 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: 5 hospitals filed a usable price — fewer than 10, so no figureNMKansas: median $2,513 across 16 hospitalsKS$2,513Arkansas: 7 hospitals filed a usable price — fewer than 10, so no figureARTennessee: 9 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: 6 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: 5 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $2,405 across 14 hospitalsOK$2,405Louisiana: 8 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 3 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: median $13,009 across 11 hospitalsAL$13,009Georgia: 9 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 6 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $12,836 across 35 hospitalsTX$12,836Florida: median $20,277 across 14 hospitalsFL$20,277
Cash price by state, most expensive first. National median $6,002. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Virginia VA12$27,224+354%$764 – $43,548
Florida FL14$20,277+238%$4,454 – $55,651
California CA38$20,093+235%$2,929 – $20,093
Colorado CO12$18,838+214%$2,379 – $38,030
Idaho ID15$15,889+165%$2,092 – $16,250
New York NY54$15,226+154%$1,973 – $75,894
Pennsylvania PA16$15,086+151%$9,655 – $24,246
New Jersey NJ33$14,242+137%$5,110 – $16,611
Alabama AL11$13,009+117%$4,565 – $23,725
Texas TX35$12,836+114%$10,156 – $19,415
Missouri MO15$10,874+81%$1,727 – $15,253
Wisconsin WI36$6,0020%$5,626 – $8,713
Minnesota MN28$5,739−4%$2,471 – $6,908
Indiana IN23$5,158−14%$1,810 – $27,122
Ohio OH22$4,454−26%$3,190 – $35,906
Michigan MI36$4,432−26%$2,227 – $17,654
Nebraska NE18$3,497−42%$1,448 – $11,018
Montana MT10$3,489−42%$2,058 – $8,802
Oregon OR23$3,347−44%$2,119 – $5,197
West Virginia WV19$3,169−47%$1,201 – $14,685
Iowa IA39$2,852−52%$2,286 – $3,291
Illinois IL20$2,682−55%$1,810 – $7,232
Washington WA20$2,627−56%$2,119 – $9,482
Kansas KS16$2,513−58%$1,641 – $17,692
Oklahoma OK14$2,405−60%$2,405 – $26,233
New Hampshire NH11$2,066−66%$1,102 – $4,162
Vermont VT10$1,954−67%$673 – $3,128
Arizona AZ9not enough hospitals filed a usable price
Georgia GA9not enough hospitals filed a usable price
Tennessee TN9not enough hospitals filed a usable price
Kentucky KY8not enough hospitals filed a usable price
Louisiana LA8not enough hospitals filed a usable price
Arkansas AR7not enough hospitals filed a usable price
Nevada NV7not enough hospitals filed a usable price
Hawaii HI6not enough hospitals filed a usable price
Maine ME6not enough hospitals filed a usable price
North Carolina NC6not enough hospitals filed a usable price
Wyoming WY6not enough hospitals filed a usable price
Connecticut CT5not enough hospitals filed a usable price
New Mexico NM5not enough hospitals filed a usable price
South Carolina SC5not enough hospitals filed a usable price
Alaska AK4not enough hospitals filed a usable price
Maryland MD3not enough hospitals filed a usable price
Mississippi MS3not enough hospitals filed a usable price
South Dakota SD3not enough hospitals filed a usable price
Massachusetts MA2not enough hospitals filed a usable price
North Dakota ND2not enough hospitals filed a usable price
Delaware DE1not enough hospitals filed a usable price
Rhode Island RI1not enough hospitals filed a usable price
Utah UT1not 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 $6,002.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care509$11,326$2,618 – $21,753
Children’s6fewer than 20 hospitals
Critical access200$3,230$1,821 – $6,734
Ownership
For-profit86$13,668$4,028 – $25,422
Government121$3,737$2,111 – $15,226
Non-profit508$5,800$2,119 – $19,290
System affiliation
Part of a system542$6,734$2,405 – $20,093
Independent174$3,864$2,041 – $13,668

Cash price vs list price

Median list price (chargemaster)$6,132
Median cash price$6,002
Cash as a share of list, median hospital65%

At the typical hospital, asking for the cash price cuts the list price by about 35%. 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.

The same procedure, inpatient

327 hospitals filed a usable inpatient cash price for this code. The median is $3,668 and the average of the middle 60% is $5,217; most fall between $1,810 and $15,473.

Cash price percentiles, inpatient, across 327 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
$1,329$2,058$3,668$12,928$20,093

The most expensive tenth of hospitals charges at least 15× what the cheapest tenth charges ($1,329 vs $20,093).

Of the 380 hospitals that filed this code inpatient, 327 gave a usable cash price; 29 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 24 a list price only.

How complete is this

716 of the 3,956 hospitals with a price file in our corpus (18%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 809 hospitals that filed this code at all gave us
Usable cash price — counted716
Cash price carrying a plausibility flag — shown on the compare tool, excluded here62
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded0
An estimate rather than a filed cash price — excluded7
A list price only, no cash figure — excluded24
Hospitals that filed this code809

Sections not shown for this setting

  • 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 24, 2026; the figures were computed September 25, 2026 from filings loaded through September 24, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Arthroplasty knee family.

Hospitals file this code under descriptions such as Arthrp Knee Condyle&Plateau Medial/Lat Cmprt.

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, “Partial knee replacement, one side of the joint (CPT 27446) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-27446-partial-knee-replacement-one-side-of-the-joint