Q9966 - Low osmolar contrast dye with 200-299 mg/ml iodine concentration, per milliliter

Healthcare Common Procedure Coding System

Last updated: 11/28/2025

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 low osmolar contrast material (also called contrast dye) that contains between 200-299 milligrams of iodine per milliliter. Contrast materials are special dyes injected into the body during medical imaging procedures like CT scans, angiograms, or other X-ray studies to help make blood vessels, organs, or other body structures more visible on the images. Low osmolar contrast materials are gentler on the body and cause fewer side effects compared to older types of contrast dyes.

Additional Information

This is a supply code for contrast material used during medical imaging procedures. The actual cost and usage will depend on the specific imaging study being performed and the amount of contrast needed.

Category

Medical Imaging Supplies

Medical Specialty

Radiology/Medical Imaging

Expected Costs

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

What's Required Before This

  • Medical imaging procedure requiring contrast
  • Assessment for iodine allergies
  • Kidney function evaluation may be required

What to Expect After

  • Drink plenty of fluids after procedure to help eliminate contrast from body
  • Monitor for any delayed allergic reactions
  • Follow specific post-procedure instructions from 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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