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See a sample rate comparisonCPT 84450 Fee Schedule
Last Verified: October 2026
Healthcare providers use this code to document and receive reimbursement for visits that address moderate-level medical decision-making, often including multiple diagnoses or prescription management.
Enzyme (Ast) Blood Test, Ast (Aspartate Aminotransferase) Is An Enzyme That Transforms Amino Acids To Energy For Cells. The Test Result Is Often Used To Assess Liver Or Heart Damage.
| Key Fact | Detail |
|---|---|
| Service Type | Pathology and Laboratory Procedures Chemistry Procedures |
| Common Place of Service | 81 - Independent Laboratory 11 - Office |
| Common Modifiers | QW - CLIA Waived Tests 26 - Professional component |
| Complexity Level | Low |
| Medicare Fee Schedule | $5.18 national lab fee schedule rate (2026) · View Medicare rates for 84450 |
| Medicaid Fee Schedule | $5.115 median of the 8 states in the free preview · View Medicaid rates for 84450 |
National average reimbursement for CPT 84450 by major payers:
$3.87
$3.68
$6.38
$7.66
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CPT 84450
5 of 25 sample ratesHigher to lower in this preview
Emerus Bhs Sa Thousand Oaks, LLC, Baptist Neighborhood Hospital
Emerus Bhs Sa Thousand Oaks LLC
$12.00Published rateChildren'S Hospital
Childrens Hospital Inc
$6.34Published rateVhs San Antonio Partners, LLC
$5.17Published rateEl Paso County Hospital District, University Medical Center Of El Paso
$3.10Published rateAmari Thomas
$2.00Published rate
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Payer Contract Negotiation
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See a sample payer proposalCPT 84450 vs. Other Chemistry Procedures Codes
The CPT 84450 code is part of the Pathology and Laboratory Procedures services used for Chemistry Procedures. It represents a moderate-complexity encounter and is one of several codes that vary based on time spent, level of medical decision-making, and documentation requirements.
The CPT 84450 code involves more provider time and moderate medical decision-making, unlike lower-level codes that require less time and simpler assessments. It typically includes multiple diagnoses, medication management, or test interpretation, leading to higher reimbursement and more detailed documentation requirements.
| Code | Complexity | Description |
|---|---|---|
| 84379-CPT | Low | Test Sugar Level In Specimen, The Test Is Used To Evaluate If An Infant Is Not Meeting Growth Benchmarks (Failure To Thrive) As A Result Of Inherited Imbalances In Fructose Sucrose Or Lactose. |
| 84425-CPT | Low | Vitamin B1 Deficiency Test, This Test Can Measure A Deficiency Of Vitamin B1 (Thiamine). Thiamine Helps Convert Carbohydrates To Energy And Is Good For The Heart Muscles And Nerves. |
| 84449-CPT | Low | Cortisol Binding Protein Test, Cortisol Binding Protein Is A Measure Of Adrenal Gland Function. It Also Plays A Role In Metabolism Of Fats And Water. The Test Is Used To Evaluate Or Identify A Variety Of Conditions. |
| 84450-CPT | Low | Enzyme (Ast) Blood Test, Ast (Aspartate Aminotransferase) Is An Enzyme That Transforms Amino Acids To Energy For Cells. The Test Result Is Often Used To Assess Liver Or Heart Damage. |
What is a fee schedule?
A fee schedule is a list of fixed prices that healthcare providers charge for specific services, including CPT 84450. These prices vary depending on payer type (Medicare, Medicaid, private insurance), geographic location, and provider contracts.
Understanding the 84450 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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