A9579 - Gadolinium-based contrast dye injection for MRI scan (1 ml)

Healthcare Common Procedure Coding System

Last updated: 10/30/2025

What is a HCPCS Code?

HCPCS (Healthcare Common Procedure Coding System) codes are used to identify medical procedures, supplies, and services for billing purposes. These codes help standardize how healthcare services are reported and billed across different providers and insurance companies.

Detailed Description

This code represents one milliliter of a gadolinium-based contrast agent that is injected into your body during an MRI (magnetic resonance imaging) scan. Gadolinium is a safe contrast material that helps make certain body parts, blood vessels, or abnormal tissues show up more clearly on MRI images. The 'not otherwise specified' means this covers gadolinium contrast agents that don't fall into other specific categories. The contrast dye is typically given through an IV line in your arm before or during the MRI procedure.

Additional Information

This code is billed per milliliter used. Multiple units may appear on your bill depending on the total amount of contrast administered during your MRI scan. Most patients tolerate gadolinium contrast well, but inform your healthcare team of any allergies or kidney problems before the procedure.

Category

Diagnostic Imaging Supplies

Medical Specialty

Radiology

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • MRI scan order
  • IV access
  • Kidney function assessment may be required

What to Expect After

  • Drink plenty of fluids after procedure to help flush contrast from body
  • Report any unusual symptoms to healthcare provider

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

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