Knee Replacement Cost in Idaho (2026): Average Prices & What You'll Pay

What does a knee replacement cost in Idaho?

Expect roughly $4,639 to $10,645 for a knee replacement in Idaho if you're commercially insured — that range already folds in both the facility charge and the physician fee. The median reported facility price across 19 hospitals is $2,935. It's built from CMS fee schedules and federally mandated hospital price transparency data.

St. Luke's Health System dominates the Boise metro and much of the state, with Saint Alphonsus (Trinity Health) as the primary competitor. Low facility density outside the Treasure Valley and Panhandle means limited price competition for most of the state's geography. Boise prices are generally moderate relative to national averages.

Knee replacement is a high-cost elective procedure where facility selection has an outsized impact on total cost. Hospital outpatient and ambulatory surgery center rates for knee replacement have converged on outcomes but diverged further on price — ASC rates are typically 30–50% below hospital rates for the same implant and surgeon. Medicare Advantage plans increasingly direct patients to designated bundled-payment facilities where your out-of-pocket liability is capped.

Across 19 Idaho hospitals that publish prices, a knee replacement runs from as little as $525 (Caribou Medical Center Inc) to $45,744 (WEST VALLEY MEDICAL CENTER in Caldwell) — a 87.1× spread for the same procedure. Half of Idaho facilities price it at or below $2,935, with most clustered between $2,128 and $4,193. Insurers negotiate this down to a median of $718, while self-pay patients are quoted $3,566 — about 5× higher, so asking for the cash or insurer-negotiated rate is often the single biggest lever on your bill.

Where knee replacement costs vary in Idaho

Pins show hospitals with price-transparency data (colored by vs. state average) and nearby ambulatory surgery centers, imaging centers, and other facilities (colored by type). Click any pin for facility name and estimated cost range.

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The facility you choose matters more than almost anything else — the same procedure, same quality, same state can cost 5× more at one hospital versus the one down the road.

→ Compare all procedure costs   → Knee Replacement costs nationwide

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Lower-cost options in Idaho start around $2,128 or below. Most hospitals cluster between $2,128 and $5,189. A smaller group reports prices above that — often academic medical centers or high-cost markets.

If you're comparing specific hospitals, the lowest self-pay rates reported in this dataset include: IHC Health Services Inc., DBA Intermountain Health Cassia Regional Hospital in Burley (cash price from $2,041); Franklin County Medical Center in Preston (cash price from $2,500); WEISER MEMORIAL HOSPITAL in Weiser (cash price from $2,935). These are declared cash prices — contact each facility for a formal quote before scheduling.

Idaho Knee Replacement prices by facility

All prices below come from hospital chargemasters — the official price lists each hospital must publish under federal law. Gross charge is the undiscounted list price; cash price is the self-pay rate; negotiated range covers the spread across insurance contracts.

Source: CMS hospital price transparency machine-readable files. vs Median = savings or premium relative to the state median price. Gross Charge = undiscounted list price for reference.

Received a bill? Check it for errors → Estimate YOUR cost before you go →

Compare other procedures in Idaho:

• Appendectomy Cost in Idaho
• Cataract Surgery Cost in Idaho

Where you can save the most on knee replacement in Idaho

These facilities have the lowest declared prices relative to the state median — they represent the best opportunities to reduce your out-of-pocket cost for this procedure.

Most expensive knee replacement providers in Idaho

These facilities report the highest prices for this procedure. Academic medical centers and specialty hospitals often top this list — their gross charges rarely reflect what anyone actually pays, but understanding the spread helps you negotiate.

Why prices vary this much

A small number of hospitals (3) report very high prices above $9,780, which drives much of the overall price range. Excluding these, most facilities cluster in a significantly tighter band.

Setting drives much of the gap in Idaho: the median outpatient price is $2,935 versus $2,500 inpatient, so where a procedure is performed often matters more than which hospital you choose. Of the Idaho facilities reporting prices, 5 fall in a low-cost tier (up to $2,128) while 5 sit in a high-cost tier ($5,189 and up) — a lower-priced option almost always exists within the same state.

The spread comes from how each hospital sets its chargemaster (the undiscounted list price), what cash discounts it applies, and what rates it negotiates with each insurer. Facility classification matters too — a hospital-owned outpatient center adds a facility fee that a freestanding clinic does not. Understanding these mechanics is the first step to paying less.

Learn more:
→ Allowed amount vs negotiated rate — what your EOB is really saying
→ How to read your medical bill
→ Why hospital prices are so hard to find — and what to do about it

How insurance changes what you actually pay

Hospital list prices are only part of the picture. What you pay out of pocket depends on your deductible, your plan's out-of-pocket maximum, whether the facility is in-network, and whether your plan classifies the visit as outpatient or inpatient. A lower gross charge doesn't guarantee a lower bill if the facility is out-of-network or adds facility fees your plan doesn't cover.

Understand your cost before you go:
→ Deductible vs out-of-pocket max
→ EOB vs medical bill — complete guide
→ How to stop medical bill problems before they start (in-network vs out-of-network)

Knee Replacement Costs by Metro Area in Idaho

Prices vary across Idaho metro areas based on local hospital competition, wage adjustments, and facility mix. Explore detailed facility price data for each metro area:

• Knee Replacement Cost in Boise City, ID
• Knee Replacement Cost in Idaho Falls, ID

Compare knee replacement costs in nearby states

• New York
• California
• Texas
• Florida

Frequently asked questions: knee replacement costs in Idaho

How much does a knee replacement cost in Idaho?

Across 19 Idaho hospitals that publish prices, a knee replacement ranges from $525 to $45,744, with a median of $2,935. Most facilities fall between $2,128 and $4,193. What you pay depends on the facility, your insurance, and whether you have met your deductible.

Where is the cheapest place to get a knee replacement in Idaho?

Based on declared prices, the lowest-cost facility in our Idaho data is West Shoshone Hospital District 1 in Kellogg at about $65. By metro, Idaho Falls has the lowest median ($15,964). Freestanding ambulatory surgery and imaging centers are often cheaper still and may not appear in hospital price data — ask your doctor whether one is an option.

Why is a knee replacement so much cheaper at some Idaho hospitals?

Prices vary up to 87.1× because each hospital sets its own list price, cash discount, and insurer-negotiated rates. In Idaho, the median cash (self-pay) price is $3,566 versus a median negotiated rate of $718 — about 5× higher. Asking for the cash price or your insurer's negotiated rate is often the single biggest lever on what you pay.

How much will I actually pay out of pocket for a knee replacement in Idaho?

Your out-of-pocket cost depends on your deductible, coinsurance, out-of-pocket maximum, and whether the facility is in-network — not just the sticker price. If you have not met your deductible, you will typically pay the negotiated rate in full until you do. Use the CostKits cost forecaster to estimate your specific out-of-pocket amount before you go.

Explore all knee replacement cost data

→ See knee replacement costs across all states

CostKits compiles hospital price transparency data to help families make informed decisions. If you've received a bill for this procedure:
→ Analyze your medical bill for errors
→ How to negotiate your medical bills
→ Track and manage your healthcare costs (free account)