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A complete blood count is one of the most commonly ordered blood tests, and most insurance plans do cover it — but “covered” and “free” are not the same word, and sometimes paying cash is actually cheaper. What you owe depends on why the test was ordered, how it’s coded, and your specific plan.
Use this guide by your situation. If you’re uninsured or paying out of pocket, skip to what a CBC costs and how to lower it. If you’re on a high-deductible plan and haven’t met your deductible, the cash-vs-insurance section is where your decision gets made. If you’re on Medicare, there’s a rule that usually works in your favor. And if you already got a surprise bill for a “covered” test, the billing-traps section explains what likely happened.
For the clinical side — what the test measures and what your numbers mean — see our guide to what a complete blood count actually measures.
ℹ️ Medical Disclaimer: This article explains costs, insurance coverage, and billing for a complete blood count as general education. It is not medical, billing, or insurance advice, and it does not diagnose any condition or guarantee coverage. Coverage and prices vary by plan, diagnosis code, lab, and region. Confirm your own cost with your insurer and lab before testing, and consult your clinician about whether a CBC is right for you.
Is a CBC covered by insurance?
Most insurance plans cover a complete blood count when a doctor orders it as medically necessary. Whether you pay nothing or owe part of the cost comes down to two things: how the test is coded, and whether you’ve met your deductible.
The distinction that decides your bill is preventive versus diagnostic. A CBC ordered to investigate symptoms — fatigue, easy bruising, a suspected infection — is diagnostic, and diagnostic lab work runs through your deductible and coinsurance until your out-of-pocket limits are met.
A routine CBC is not a “free” preventive screening
Here is what most pages get wrong. A standalone CBC is not on the federal list of no-cost preventive screenings. The Affordable Care Act requires plans to cover a specific set of screenings at no charge — cholesterol, diabetes, and several cancer screenings among them — but a complete blood count is not one of them, which you can confirm on the ACA’s no-cost preventive screening list for adults. So a CBC drawn at a wellness visit is $0 only if your plan and the coding treat it that way, not because the law guarantees it.
The CPT code behind your CBC
On your bill, a CBC appears as a CPT code: 85025 for a version with an automated differential, or 85027 without one. The blood draw itself — venipuncture, code 36415 — can be billed as a separate line, which is why a “simple blood test” sometimes shows more than one charge.
🔬 How It Works: Your bill is built from two codes working together. The CPT code says what was done — the CBC — and an ICD-10 diagnosis code says why. When the “why” is a screening code, some plans process the CBC as preventive; when it’s a symptom or condition code, it’s diagnostic and runs through your deductible. Same test, two different bills.
✅ Patient Action: Before your draw, ask the ordering office: “Will this CBC be billed as preventive or diagnostic, and what will I owe?” You’re asking how it’s coded so you can plan — not asking anyone to change a code.
How much does a CBC cost?
Without insurance, a complete blood count typically costs about $10 to $50 at a direct-access or retail lab, but $50 to $400 or more at a hospital outpatient lab. The test is the same; the price follows where you have it drawn.
| Where you get it | Typical self-pay price (CBC) | Best for |
|---|---|---|
| Direct-access / retail lab (independent labs, cash-pay platforms) | ~$10–$50 | Uninsured or high-deductible patients who know which test they need |
| Doctor’s office or clinic draw | ~$30–$80 (a draw fee may be added) | A test tied to a visit you’re already having |
| Hospital outpatient lab | ~$50–$400+ | When the test must be done on-site during care |
| With insurance, diagnostic, deductible not met | The negotiated rate applied to your deductible — often more than the cash price | Once your deductible is met, or when costly follow-up is likely |
Source: self-pay ranges compiled from published 2026 lab pricing; actual prices vary widely by lab, region, and whether a draw or handling fee is added.
Why a hospital CBC costs more
A hospital bills lab work through a facility-fee structure, so the same CBC can cost several times more than at an independent lab. That gap — not the amount of blood drawn — is what turns a sub-$50 test into a three-figure charge.
The scary “$600 CBC” figures circulating online usually bundle a physician visit or reflect a hospital’s list (“chargemaster”) price, not the retail cash price. For a fuller breakdown of what drives the number, see our guide to what a CBC costs.
Does Medicare cover a complete blood count?
Yes. Medicare Part B covers a CBC when your doctor orders it as medically necessary, and you usually pay nothing — clinical diagnostic lab tests are exempt from the Part B deductible and the 20% coinsurance that apply to most other services, per Medicare’s diagnostic laboratory test coverage.
📊 Clinical Data Point: The 2026 Medicare Part B annual deductible is $283 — Source: CMS, 2026. But clinical laboratory tests, including a CBC, are exempt from that deductible and from coinsurance, so a covered, medically necessary CBC generally costs $0. See the 2026 Part B premium and deductible figures.
Routine vs. medically necessary under Medicare
The catch is that Medicare does not cover a routine or screening CBC ordered at an annual physical without a specific medical reason. In that case, the test isn’t covered and you pay out of pocket — the same as any self-pay patient.
🩺 Physician Note: Coverage hinges on medical necessity and a qualifying diagnosis. If a lab expects Medicare won’t pay — often because the test lacks a supporting diagnosis code or exceeds a frequency limit — you may be asked to sign an Advance Beneficiary Notice (ABN) accepting responsibility for the cost. Read it before you sign.
✅ Patient Action: If you’re on Medicare, ask your ordering clinician: “Is this CBC medically necessary, and will it be coded with a diagnosis Medicare accepts?” If you’re handed an ABN, ask exactly what may not be covered before you sign it.
Cash vs. insurance: which is actually cheaper?
Paying cash for a CBC is often cheaper than using insurance in specific situations — and often not in others. The deciding factors are your deductible, why the test was ordered, and where it’s drawn.
When paying cash usually wins:
- You’re uninsured and can use a direct-access lab, where a CBC often runs about $10–$50.
- Your deductible is high and unmet, so insurance would have you pay the negotiated rate anyway.
- The test would be drawn at a hospital lab, where a self-pay or independent-lab price is often far lower.
- It’s a routine wellness CBC your plan doesn’t treat as no-cost preventive.
When using insurance usually wins:
- You’ve already met your deductible, so covered care costs little or nothing more.
- The CBC is genuinely diagnostic and part of a workup where more, and more expensive, tests may follow.
- You’re on Medicare and the test is medically necessary — in which case it’s typically $0 anyway.
Before you pay for anything, make sure you’re ordering the test you actually need. A CBC and a metabolic panel answer different questions, as our comparison of how a CBC differs from a metabolic panel explains.
How to lower what you pay for a CBC
You have more control over a CBC price than most bills suggest. A few steps before the draw can cut the cost substantially.
- Ask for the self-pay or cash-discount price specifically, and give the CPT code (85025 or 85027) so the quote covers the right test. Federal price-transparency rules require hospitals to publish cash prices for shoppable services.
- Choose an independent or direct-access lab over a hospital outpatient lab; the same test usually costs far less outside a facility-fee structure.
- Confirm whether a separate draw fee (code 36415) or handling fee applies, so your “all-in” price holds no surprises.
- Use HSA or FSA funds — physician-ordered lab tests are generally eligible.
If convenience matters more than a lab visit, weigh the trade-offs in our look at at-home CBC test options. And if your CBC is bundled with other tests, check whether you need to fast beforehand so you don’t need a repeat draw.
Billing traps to avoid — and when not to skip the test
Two real risks sit on either side of a CBC bill: paying more than you should, and skipping a test you actually need.
Common surprise-bill traps:
- An out-of-network lab, even when your doctor is in-network — confirm where the specimen is processed.
- A hospital send-out billed at list (“chargemaster”) rates instead of a retail cash price.
- A test coded without a qualifying diagnosis, so a “covered” service still isn’t paid.
⚠️ Clinical Warning: A CBC your clinician orders can flag anemia, infection, and blood disorders that need prompt attention. Don’t skip a medically necessary CBC to save money. If cost is the barrier, ask your ordering clinician directly: “Can you send this to an independent lab, or tell me if it can safely wait?” — rather than declining the test on price alone.
CBC cost and insurance: frequently asked questions
1. Is a CBC considered preventive or diagnostic?
Usually diagnostic. A CBC ordered to investigate symptoms or monitor a condition is diagnostic and applies to your deductible. A standalone CBC is not on the ACA’s no-cost preventive screening list, so it counts as “preventive” only when your plan and its coding treat it that way. Ask your insurer how yours will process.
2. Why did I get a bill for a “covered” blood test?
Because “covered” and “free” are different. A covered CBC still runs through your plan’s normal rules, including your deductible and coinsurance, unless it’s processed as a no-cost preventive service. A diagnostic CBC, or one from an out-of-network lab, commonly leaves a balance even when the test is fully covered.
3. How much does a CBC cost without insurance?
Without insurance, a CBC typically costs about $10 to $50 at a direct-access or retail lab, and $50 to $400 or more at a hospital outpatient lab. Prices vary widely by lab and region, and a separate blood-draw fee may be added, so always ask for the all-in self-pay price up front.
4. Why is a CBC so expensive at the hospital?
Hospitals bill lab work through a facility-fee structure, so the same CBC can cost several times more than at an independent lab. Online figures near $600 usually reflect a hospital list price or bundle a physician visit — not the retail cash price you’d pay at a stand-alone lab.
5. Does Medicare cover a CBC?
Yes, when a doctor orders it as medically necessary. Clinical lab tests, including a CBC, are exempt from the Part B deductible and coinsurance, so a covered CBC generally costs $0. Medicare does not cover a routine CBC at an annual physical without a specific medical reason. Confirm coverage with your clinician and plan.
6. Is it cheaper to pay cash for blood work?
Often, yes — if you’re uninsured, haven’t met your deductible, or your plan won’t cover the CBC as preventive, cash at a direct-access lab (about $10–$50) can beat the insured price. Using insurance usually wins once your deductible is met or when costly follow-up testing is likely.
7. What is the CPT code for a CBC?
A CBC is billed as CPT code 85025 (with an automated differential) or 85027 (without one). The blood draw itself is a separate code, 36415. Knowing the code lets you request an accurate self-pay quote and check the specific benefit with your insurer before testing.
8. Can I use an HSA or FSA to pay for a CBC?
Yes. A physician-ordered CBC is generally an eligible expense for both a health savings account (HSA) and a flexible spending account (FSA). Using these pre-tax funds lowers your effective cost, whether you pay a self-pay lab price or a balance applied to your deductible.
9. Do I need a doctor’s order to get a CBC?
Sometimes. Many direct-access and cash-pay labs let you order a CBC yourself without a physician’s order, though this varies by state and some restrict certain tests. If you want the result interpreted or covered by insurance, a clinician’s order and medical necessity are usually required.
10. Will my insurance cover a CBC at my annual physical?
Not automatically. Because a CBC isn’t a mandated no-cost preventive screening, a wellness-visit CBC is covered at $0 only if your plan chooses to and the coding supports it. If it’s coded to a symptom or condition, it becomes diagnostic and applies to your deductible. Ask your plan before the visit.
11. What’s an ABN and why was I asked to sign one?
An Advance Beneficiary Notice (ABN) is a Medicare form a lab gives you when it expects a test may not be covered — often because it lacks a qualifying diagnosis or exceeds a frequency limit. Signing means you accept responsibility for the cost. Ask exactly what may not be covered before you sign.
The bottom line on CBC cost
A medically necessary complete blood count is usually covered, and on Medicare it’s typically $0 — but “covered” isn’t “free,” and the diagnosis code plus your plan decide what you actually owe. A routine CBC isn’t a guaranteed no-cost preventive screening, so a wellness-visit draw can still land on your deductible.
The move that saves money is simple: get a real price before the draw, ask how the test will be coded, and compare a direct-access lab against your insured cost. When those numbers are in front of you, the cash-vs-insurance decision usually makes itself.
About this content
How this article was put together: researched from recognised health sources, drafted with the help of AI tools, and edited by hand, with sources linked throughout.
Sameer Patel is the founder and editor of My Medicine Advisor. He is not a doctor or medical professional — before starting this site he worked in banking,…
Medical disclaimer
The content on MyMedicineAdvisor is provided for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Health information on this website should not be used to diagnose, treat, cure, or prevent any condition without guidance from a qualified healthcare professional. Always seek the advice of your doctor, physician, or another licensed healthcare provider with any questions you may have regarding a medical condition, symptoms, medications, or treatment decisions.
