R921 - Calcium deposits found on breast mammogram 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 indicates that calcium deposits (calcifications) were detected in breast tissue during a mammogram or other diagnostic breast imaging. Calcifications are small deposits of calcium that appear as white spots on mammograms. They are very common and are usually benign (not cancerous), but sometimes require additional evaluation to determine their significance. The presence of calcifications alone does not indicate cancer, but rather that something was seen on the imaging that needed to be documented.

Additional Information

This is a finding code used to document what was observed on imaging. Most breast calcifications are benign, but follow-up recommendations depend on the pattern, distribution, and characteristics of the calcifications as determined by the radiologist.

Category

Diagnostic imaging findings

Medical Specialty

Radiology/Breast imaging

Expected Costs

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

What's Required Before This

  • Mammogram or breast diagnostic imaging

What to Expect After

  • Follow-up imaging as recommended by radiologist
  • Possible additional views or magnification mammography
  • Potential biopsy if calcifications have suspicious characteristics

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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