Sed Rate Test Cost and Medicare Coverage (CPT 85652)
Also called: ESR · sedimentation rate · SR — all the same test, CPT 85652.
No test-specific policy — general Medicare medical-necessity rules apply what's this?
Medicare has no national or regional policy written for this specific test. The general standard applies instead: it’s covered when your doctor orders it for a medical reason — evaluating symptoms, or monitoring a condition or medication — and not as routine screening.
- Does Medicare cover it?
- Yes — covered
- You pay if covered
- $0 — no deductible, no coinsurance
- Medicare pays the lab
- $2.70
- Information verified
- 2026-09-04
Buy it yourself — what you'd really pay
| Where | Test price | Fee | Total |
|---|---|---|---|
| Jason Health jasonhealth.com | $10 | $18 one fee per order — covers every test on it | $28 |
| Ulta Lab Tests ultalabtests.com Partner link — we earn a commission if you order. No extra cost to you. | $23.95 | $12.95 draw fee — one per order, covers every test on it | $36.90 |
Disclosure: the Ulta Lab Tests link above is a partner link. If you order through it, ClaraCover earns a commission. It costs you nothing extra, and it never changes what we tell you about Medicare coverage.
The short answer
Yes — when it’s ordered for a medical reason, which is how this old workhorse is nearly always used. The sed rate has no special Medicare policy; the general rule applies, and evaluating or tracking inflammation easily satisfies it. It’s among the cheapest tests in the entire fee schedule — Medicare pays the lab $2.70 — so it should never be the line that surprises you on a bill.
When Medicare DOES cover it
- Evaluating symptoms of inflammation — unexplained fevers, aches, headaches in older adults (where certain artery inflammation is a concern), and general “something inflammatory is going on” workups
- Diagnosing and tracking inflammatory conditions — polymyalgia rheumatica, temporal arteritis, rheumatoid arthritis, and other autoimmune and inflammatory diseases where the sed rate helps gauge activity
- Monitoring treatment of those conditions over time
When Medicare does NOT cover it
- Routine screening — a sed rate with no symptom or condition behind it (rare in practice for this test).
What you pay if it IS covered: $0
Covered lab tests cost Medicare patients nothing — no deductible, no 20% coinsurance. Medicare pays the lab $2.70, and you owe zero.
What it costs to buy yourself
$10 at Jason Health (jasonhealth.com — add their flat $18 lab-collection fee per order). Quest’s and Labcorp’s consumer sites sell the ESR only inside larger inflammation panels, so Jason is the budget direct option — though at these prices, the covered route through your doctor is the natural path.
Quick questions people ask
What’s ESR in a blood test? ESR — erythrocyte sedimentation rate, the formal name for the sed rate — measures how quickly your red blood cells settle in a tube over one hour. Inflammation changes blood proteins in ways that make cells clump and fall faster, so a high ESR is a general “inflammation somewhere” signal. It doesn’t say where — it points your doctor toward more specific testing. On billing paperwork it’s CPT code 85652.
What does “ESR Westergren” mean on my lab order? Just the method: Westergren is the standard technique (a specific tube, measured for one hour) — the name of the inventor, not a different test. “Sed rate by modified Westergren” and “ESR” on an order are the same thing.
Sed rate vs. CRP — why order both? They’re overlapping inflammation markers with different personalities: CRP rises and falls within days, the sed rate moves more slowly. Doctors sometimes order both to time-stamp an inflammatory process. Separate tests, separate codes, both inexpensive.
Sources and data dates
Medicare payment amount: CMS Clinical Laboratory Fee Schedule, 2026 Q3 file (national rate). Coverage: no test-specific national policy — general Medicare medical-necessity rules apply. Consumer prices and catalogs checked September 2026. Information current as of the date shown above; coverage is always determined by Medicare when your claim is processed.
ClaraCover provides information, not medical, billing, or insurance advice. Talk to your doctor about what tests you need.