Z91041 - Medical record notation indicating a known allergy to contrast dye used in medical imaging

International Classification of Diseases

Last updated: 10/3/2025

What is a ICD-10 Code?

ICD-10 (International Classification of Diseases, 10th Revision) codes are used to classify and code all diagnoses, symptoms, and procedures recorded in association with hospital care. These codes provide a standardized way to track health conditions and their treatment outcomes.

Detailed Description

This code is used in your medical records to document that you have a known allergy to radiographic contrast dye (also called contrast material or dye). This is the special liquid that is sometimes given before CT scans, MRIs, or other imaging tests to help make certain body parts show up more clearly in the pictures. Having this code in your medical record is important because it alerts all healthcare providers that you cannot safely receive standard contrast dye and may need special preparations, alternative contrast materials, or different imaging approaches. This is a safety measure to prevent allergic reactions during future medical procedures.

Additional Information

This is a documentation code, not a billable procedure. It ensures your safety by alerting medical staff to use alternative contrast materials or premedication protocols when imaging is needed. Always inform healthcare providers about this allergy before any medical procedures.

Category

Personal History/Status Code

Medical Specialty

Radiology/General Medicine

Expected Costs

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

What's Required Before This

  • Previous documented allergic reaction to contrast dye
  • Allergy testing results
  • Medical history review

What to Expect After

  • Inform all healthcare providers about this allergy
  • Consider wearing medical alert bracelet
  • Discuss premedication options with doctors before future imaging
  • Keep updated allergy list

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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