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 need no motor, cord or refill routine, and a machine buys 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.
Checked four cold-therapy options — three machines plus the gel-pack baseline — against live Amazon prices and product listings — how we choose →
3 picks we checked
Ossur Cold Rush Cold Therapy Machine with Knee Pad
$224.98 Amazon price, checked Oct 25, 2026
- Brand: Ossur
- How it stays cold: Electric pump, continuous circulation
Continuous electric circulation — the steadiest cold of the four.
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.
Flaw: A motor that can fail and a unit that needs a wall outlet. You get a steadier temperature, not a different outcome.
See the Ossur Cold Rush Machine on Amazon →
Koozam Cryo Cuff Knee Cooler Cold Therapy System
$99.00 Amazon price, checked Oct 25, 2026
- Brand: Koozam
- How it stays cold: Gravity-fed (elevated cooler, no motor or battery)
Nothing electronic to break — you fill and elevate a cooler instead of plugging one in.
Best for: a setup with nothing electronic that can break, at the lowest machine price.
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, but you refill and re-elevate it manually instead of it running unattended the way the motorized units do.
Flaw: You refill and re-elevate the cooler by hand instead of it running unattended the way the motorized unit does.
See the Koozam Cryo Cuff System on Amazon →
Aircast Cryo/Cuff System (Compression + Cold Therapy, Knee)
$124.99 Amazon price, checked Oct 25, 2026
- Brand: Aircast (DJO)
- How it stays cold: Gravity-fed cold water plus an inflatable compression bladder in the cuff
Cold plus an inflatable compression cuff, for less than the fully motorized Ossur unit.
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. That is part of why it costs less than the Ossur unit, even with the compression feature.
Flaw: Still gravity-fed, not motorized — refilled by hand like the budget pick, just with a compression cuff added.
See the Aircast Cryo/Cuff System on Amazon →A motorized or gravity-fed cold-therapy machine buys a steadier temperature than a 2-pack of reusable gel ice packs, not a better outcome.
Gel packs have no motor, pump or reservoir to fail, and no cord to plug in. That is a plain fact about how they work. It is not a clinical recommendation either way.
Source: Amazon product listings (prices re-read nightly)
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 is among the 68 Medicare equipment codes this site tracks.
Those 68 codes cover canes, crutches, walkers, commodes, bath and toilet safety items, hospital beds, patient lifts, seat lifts, and manual wheelchairs. Cold-therapy units are not on that list. We have not looked up whether E0218/E0236 appear in the Medicare fee schedule or how often they were billed in 2024. We're not telling you this is or isn't a covered benefit. Our data doesn't answer that question yet.
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
No cold-therapy-machine recalls in the CPSC and FDA recall records we have.
This is not a clean bill of health. Our recall searches (bed rail, walker, rollator, shower chair, lift chair, commode, patient lift, and similar terms) never included 'ice therapy,' 'cold therapy,' or 'cryotherapy.' Looking through all the records we have for ice, cold, or cryo wording found no cold-therapy-machine recall.
Source: CPSC and FDA recall records (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 -- our recall 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 enough
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 simple: cheap, no motor or reservoir to fail, and no cord or refill routine. 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, on the full page.
Rent vs. buy: knee scooter, ice machine, hospital bed
The break-even math for the three items people are most likely to overspend on.
We earn a commission if you buy through the links above (Amazon Associates). It doesn't change the price you pay, and it doesn't change which products we picked — see our methodology.
Sources
- CMS HCPCS Level II quarterly file, July 2026 release — confirms E0218/E0236 exist as valid codes; they are not among the 68 Medicare equipment codes this site tracks
- CPSC and FDA recall records (CPSC SaferProducts.gov + openFDA Device Recall/Enforcement) — 191 records found with 9 search terms; none match cold-therapy machines, which those searches did not target
- CPSC SaferProducts.gov — check any specific brand/model directly -- our recall searches did not cover this category
- Amazon product listings — We check each Amazon price and whether it is in stock every night. A price only shows if it was checked in the last 24 hours.