18311
CPTSurgeryFACTOR II ASSAY
Verified from hospital fileNot a bill estimate
iDirect answer
Based on the latest published hospital price files, code 18311 (FACTOR II ASSAY) appears at 3 hospitals with disclosed cash prices from $3.16 to $37.24. This is public hospital price transparency data, not a guaranteed estimate of your bill.
Published-price availability
3
hospitals publish a price
0
list this service without a published price
3
Cash
3
List
1
Negotiated
0
Allowed
Compare 18311 prices
Filter by hospital, city, setting, or payer — the summary and charts update with your filters.
Published cash prices for code 18311 vary by about 12× across the 3 hospitals with disclosed prices here — from $3.16 to $37.24. Shopping around can matter.
3
Hospitals
3
Prices shown
$3.16
Lowest cash
$37.24
Highest cash
code 18311 cash price3 disclosed · 3 hospitals
$3.16median ~$12.81$37.24
Lowest cash price by hospital
- Beacon Plainwell$37.24
Cash price by city
Reflects your current filters.
Cash price by city$3.16 – $37.24
- Saint Louis · 1 hospital$3.16
- Bridgeton · 1 hospital$12.81
- Plainwell · 1 hospital$37.24
3 prices shown.
| Service | Hospital | Code | List price | Cash price | Negotiated range | Allowed (median) | |
|---|---|---|---|---|---|---|---|
| FACTOR II ASSAY Inpatient & outpatient | Beacon Plainwell | 18311 CDM | $76.00 | $37.24 | $76.00 – $76.00 | — | |
| Risperidone Tab 2 MG Inpatient & outpatient | SSM Health DePaul Hospital - St. Louis | 18311 CDM | $23.29 | $12.81 | — | — | |
| Risperidone Tab 2 MG Inpatient & outpatient | SSM Health Saint Louis University Hospital | 18311 CDM | $5.75 | $3.16 | — | — |
How to read these prices
- Cash price
- The discounted self-pay price for paying directly, without insurance.
- List price
- The hospital’s full undiscounted charge — rarely what anyone pays.
- Negotiated rate
- A rate for a specific insurer and plan; your share depends on your benefits.
- Allowed amount
- A historical reference for what was actually allowed, where disclosed.
Hospitals that publish 18311 prices
Open a hospital to see this code in the context of its full published prices.
Code 18311: frequently asked
- What does code 18311 cost?
- Across the published hospital price files, the disclosed cash price for 18311 ranges from $3.16 to $37.24. This is public hospital price transparency data, not a guaranteed estimate of your bill.
- Will this be my final bill?
- Actual patient responsibility may vary based on your insurance plan, deductible, coinsurance, network status, diagnosis, setting, bundled services, clinical circumstances, and hospital billing practices.
- What is code 18311?
- 18311 is the billing code hospitals use to identify "FACTOR II ASSAY" on their published price files. We use it to line up the same service across different hospitals.
- Why do prices for this code differ between hospitals?
- Each hospital sets its own prices and negotiates separately with each insurer, so the disclosed price for the same code can vary widely from one hospital to another — and even between plans at a single hospital. Comparing the published figures is what this page is for; a difference does not by itself mean one hospital is better or worse.
- What this page is not
- It is not a quote, a guarantee, or medical advice. It shows what hospitals have published for this code, so you can compare and ask informed questions — your actual cost depends on your insurance, the exact services performed, and the care setting.