Ice therapy machines
Get the gel ice packs below unless you specifically want the steadiest possible cold and don't mind an outlet and a motor — here's why: gel packs are what recovery-forum posts keep naming as enough on their own, and a machine costs $60.31–$161.30 more for convenience, not a better outcome. If you do want a machine, the Aircast Cryo/Cuff below adds compression for less than the fully motorized Ossur unit.
4 picks we checked
Ossur Cold Rush Cold Therapy Machine with Knee Pad
$199.99 checked 2026-07-27
- Brand: Ossur
- How it stays cold: Electric pump, continuous circulation
Best for: wanting the steadiest possible temperature and not minding an outlet and a motor that can fail.
Ossur is an established orthopedic-device manufacturer. An electric pump keeps water circulating through the pad continuously, so the pad stays at a steadier temperature for longer than a gravity-fed or static gel pack, at the cost of a motor that can fail and a unit that needs a wall outlet nearby.
View on Amazon
Koozam Cryo Cuff Knee Cooler Cold Therapy System
$99.00 checked 2026-07-27
- Brand: Koozam
- How it stays cold: Gravity-fed (elevated cooler, no motor or battery)
Best for: keeping cost down with nothing electronic that can break.
No motor or battery -- you fill the cooler with ice water and elevate it above the knee pad; gravity does the circulating. Nothing electronic to break, and it's the cheapest machine option we verified, but you refill and re-elevate it manually instead of it running unattended the way the motorized units do.
View on Amazon
Aircast Cryo/Cuff System (Compression + Cold Therapy, Knee)
$124.99 checked 2026-07-27
- Brand: Aircast (DJO)
- How it stays cold: Gravity-fed cold water plus an inflatable compression bladder in the cuff
Best for: focused swelling control in the first days after surgery, from the inflatable compression bladder built into the cuff.
Aircast's Cryo/Cuff pairs cold with an inflatable compression bladder built into the cuff, adding focused compression on top of the cold rather than just cooling the skin surface. It's gravity-fed like the budget pick above, not motorized, which is part of why it costs less than the Ossur unit despite adding the compression feature.
View on Amazon
REVIX Reusable Gel Ice Packs for Knee (2-Pack)
$38.69 checked 2026-07-27
- Brand: REVIX
- How it stays cold: Freeze and swap -- no pump, no gravity rig, no electricity
Best for: most people — the cheapest option, and the one recovery-forum posts keep naming as enough on its own.
A 2-pack of knee-shaped gel wraps with elastic straps -- one is always in the freezer while the other is on your knee. This is the item several posts in our recovery-forum corpus name as a must-have with no machine involved at all; buy two so you're never waiting on a refreeze.
View on AmazonA motorized or gravity-fed cold-therapy machine costs $60.31 to $161.30 more than a 2-pack of reusable gel ice packs -- $38.69 for the gel packs vs. $99.00-$199.99 for the four machines checked above, all live-verified Amazon prices.
A recovery-forum post in our corpus (predominantly hip/THR-skewed -- see the scope note in the sources below) lists '4 rectangular gel packs (mine attached with a sleeve and stretchy velcro band -- worked great)' as a recovery must-have with no machine mentioned at all. That's one household's real experience, not a clinical recommendation either way.
Source: Amazon Creators API, live prices checked 2026-07-27
Medicare: what we can and can't confirm
E0218 ('fluid circulating cold pad with pump, any type') and E0236 ('pump for water circulating pad') are real, current HCPCS codes in CMS's July 2026 code list -- but neither one was included in the set of DME categories the Medicare fee-schedule check on this site was built to cover.
That check targeted canes/crutches/walkers, commodes, bath and toilet safety items, hospital beds, patient lifts, seat lifts, and manual wheelchairs -- cold-therapy units were out of scope from the start, not a gap in an otherwise-complete search. We have not checked whether E0218/E0236 appear in the DMEPOS fee schedule or what DY2024 national utilization looks like. We're not telling you this is or isn't a covered benefit -- we're telling you our data doesn't answer that question yet, which is a more honest place to leave it than guessing.
Source: CMS HCPCS Level II quarterly file, July 2026 release
If you need a real answer before you buy, ask your DME supplier or your surgeon's office whether they can bill a cold-therapy unit under E0218 with your specific prescription and insurer -- coverage for this equipment varies enough by plan and supplier that a phone call will get you a faster, more reliable answer than we can verify from public CMS data alone.
Recall history
Zero cold-therapy-machine recalls in the federal recall data we track.
Disclosed honestly: that's an out-of-scope zero, not a verified-clean one. The searches we've run (bed rail, walker, rollator, shower chair, lift chair, commode, patient lift, and similar terms) never included 'ice therapy,' 'cold therapy,' or 'cryotherapy.' Re-scanning everything we've collected for any ice/cold/cryo/thermal mention finds no actual cold-therapy-machine recall in it -- just unrelated device names and one amusing false-positive, a rollator sold in a color literally named 'Ice Palace.'
Source: data/recalls.json (CPSC SaferProducts.gov + openFDA Device Recall/Enforcement)
Check the CPSC and FDA databases directly for the specific brand and model in front of you before buying secondhand or borrowing one -- this page's search never specifically targeted this category, so absence here isn't proof of a clean record.
Ice consumption and timers — what we won't tell you
Motorized and gravity-fed units need an ongoing supply of ice and water, refilled by hand every few hours of active use -- that's an ongoing cost in your time and freezer capacity, on top of the purchase price above. A 2-pack of gel packs needs freezer space for two packs and nothing else.
Several machines advertise a programmable or auto-shutoff timer as a convenience and safety feature -- that's a hardware setting, not clinical dosing guidance. How long and how often to ice your knee is a question for your surgeon or physical therapist, tied to your specific procedure and recovery stage -- this page verifies products and prices, not icing protocols, and won't guess at one.
When gel packs are the honest choice
The case for a machine is steadier cold over a longer stretch without swapping packs by hand -- real, but a convenience upgrade, not a different outcome we have data on. The case for gel packs is the corpus quote above: cheap, no motor or reservoir to fail, no cord or refill routine, and "worked great" is a real recovery experience, not a compromise. Buy at least two packs so one's always in the freezer while the other's in use, whichever tier you land on.
Go deeper
The full knee-replacement recovery checklist
Every item from before-surgery through weeks 2–6, with the same covered/buy/rent/borrow flags.
Do I really need an ice machine?
The rent-vs-buy math on cold-therapy units versus a bag of gel packs, in the full spoke.
Rent vs. buy: knee scooter, ice machine, hospital bed
The break-even math for the three items people are most likely to overspend on.
Sources
- CMS HCPCS Level II quarterly file, July 2026 release — confirms E0218/E0236 exist as valid codes; confirms they are outside coverage_status.json's 68-code target scope
- data/recalls.json (CPSC SaferProducts.gov + openFDA Device Recall/Enforcement) — 191 records across 9 search terms; 0 cold-therapy-machine matches, disclosed as out-of-scope
- CPSC SaferProducts.gov — check any specific brand/model directly -- not covered by our search terms
- Amazon Creators API — live product data (title, brand, price, ASIN, image) fetched 2026-07-27; prices change after that date
- General lower-extremity joint-replacement recovery forum commentary (BoneSmart, AgingCare) — predominantly hip/THR-skewed -- see data/knee_corpus.json for the scope caveat; used only for the gel-pack quote above