Knee Replacement Surgery Cost in Washington

Hospital charges for total knee arthroplasty in Washington vary widely based on facility type, geographic competition, and payer mix.

For total knee arthroplasty in Washington, the choice of facility can mean thousands of dollars in price difference. Teaching hospitals and major health systems typically maintain higher chargemaster rates, while community hospitals and outpatient centers may offer competitive self-pay pricing.

Based on data from 38 hospitals in Washington, total knee arthroplasty prices range from $1,098 to $80,033 — a 72.9x difference. This wide variation underscores why comparing prices before scheduling is critical for controlling your out-of-pocket costs.

Total knee arthroplasty in Washington can be performed in different settings depending on clinical complexity: hospital inpatient, hospital outpatient, or ambulatory surgery center (ASC).

ASCs typically offer lower prices because they have lower overhead and specialize in efficient, high-volume outpatient procedures. For eligible patients, ASCs can save 30–60% compared to hospital outpatient departments.

Not all patients are candidates for outpatient surgery. Your surgeon will determine the appropriate setting based on your health history, the procedure's complexity, and anticipated recovery needs.

If you're paying out of pocket for total knee arthroplasty in Washington, you may be able to negotiate a rate lower than the hospital's published list price. Federal law requires hospitals to post cash-pay rates, making it easier to compare options before scheduling.

In Washington, the average cash price for total knee arthroplasty is $17,152, which is 35% lower than the average list price of $26,557. This discount is typical of what self-pay patients can expect when asking for the hospital's uninsured rate.

Insured patients should check their plan's Summary of Benefits and contact their insurer for a pre-authorization cost estimate. Your out-of-pocket cost depends on your deductible, copay or coinsurance, and whether the provider is in-network. Even with insurance, comparing hospitals can help you choose a provider where your plan negotiates the best rates.