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N60.12

N60.12: Diffuse cystic mastopathy of left breast

Billable / specific codeICD-10-CMleft

N60.12 is a billable, specific ICD-10-CM code for diffuse cystic mastopathy of left breast. It is valid for submission on a claim.

Check N60.12 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above N60.12

A category’s note binds every code beneath it.

Written on N60.1: Diffuse cystic mastopathy

  • diffuse cystic mastopathy with epithelial proliferation (N60.3-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

N60.12 is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52453Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs
  • A52849Billing and Coding: Breast Imaging: Breast Echography (Sonography)/Breast MRI/Ductography
  • A56448Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under N60.1

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.