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See a sample rate comparisonCPT 83945 Fee Schedule
Medicare rates as of January 2026
CPT 83945 is classified under Pathology and Laboratory Procedures, in the Chemistry Procedures subgroup.
Confirm Kidney Stone Material, A 24-Hour Urine Collection Is Measured For The Amount Of Oxalate. This Helps To Indicate The Correct Preventive Treatment For Kidney Stones Such As Dietary Restrictions.
| Key Fact | Detail |
|---|---|
| Service Type | Pathology and Laboratory Procedures Chemistry Procedures |
| Common Place of Service | 81 - Independent Laboratory 11 - Office |
| Common Modifiers | 90 - Reference Laboratory 26 - Professional component |
| Complexity Level | Low |
| Medicare Fee Schedule | $14.45 national lab fee schedule rate (2026) · View Medicare rates for 83945 |
| Medicaid Fee Schedule | $13.295 median of the 8 states in the free preview · View Medicaid rates for 83945 |
National average reimbursement for CPT 83945 by major payers:
$12.15
BCBS / Anthem
$9.78
UnitedHealthcare
$15.43
Aetna
$20.86
Cigna
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CPT 83945
5 of 25 sample ratesHigher to lower in this preview
Chu Chen
Merrimack Valley Pediatric Associates, Inc.
$31.79Published rateAmarillo Vamc
$17.98Published rateCrescent City Surgical Centre Operating Company, L.L.C.
Crescent City Surgical Centre
$14.44Published rateAmari Thomas
Methodist Hospital
$10.75Published rateBellville Hospital District, Bellville General Hospital
Bellville Medical Center
$7.55Published rate
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See a sample payer proposalCPT 83945 vs. Other Chemistry Procedures Codes
The table lists codes related to 83945. Select one to see its fee schedule.
| Code | Complexity | Description |
|---|---|---|
| 83935-CPT | Low | Test Of Urine Density, Test To Measure The Density Of Particles In The Urine Which Are Responsible For Retaining Or Secreting Water From The Body. |
| 83945-CPT | Low | Confirm Kidney Stone Material, A 24-Hour Urine Collection Is Measured For The Amount Of Oxalate. This Helps To Indicate The Correct Preventive Treatment For Kidney Stones Such As Dietary Restrictions. |
| 84105-CPT | Low | Phosphorus Trace Element Test, The Urine Phosphorus Test Checks For Calcium Absorption And Kidney Function. Phosphorus Is A Trace Element Required For Proper Digestion Bone Formation And Kidney Health. It Aids The Balance Of Calcium Potassium And Glucose. |
| 84133-CPT | Low | Potassium Electrolyte Test, Potassium Is An Electrolyte Critical For Heart And Skeletal Muscles. The Blood Test Measures Overall Potassium. The Urine Test Verifies High Levels Related To Kidney Disease. |
What is a fee schedule?
A fee schedule is a list of fixed prices that healthcare providers charge for specific services, including CPT 83945. These prices vary depending on payer type (Medicare, Medicaid, private insurance), geographic location, and provider contracts.
Understanding the 83945 fee schedule helps patients estimate costs and providers optimize billing for accurate reimbursements.
Factors that affect fee schedules
Medicare & Medicaid Rates
Government-set reimbursement amounts
Private Insurance Rates
Negotiated rates between providers and insurance companies
Geographic Location
Costs may be higher in urban areas.
Provider Type
Hospital providers may have different rates than private practice.
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