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N64.2

N64.2: Atrophy of breast

Billable / specific codeICD-10-CM

N64.2 is a billable, specific ICD-10-CM code for atrophy of breast. It is valid for submission on a claim.

Check N64.2 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above N64.2

Not part of this code, but both may be coded when both are present.

Written on N64: Other disorders of breast

  • mechanical complication of breast prosthesis and implant (T85.4-)

Risk adjustment

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

Medicare coverage

N64.2 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52849Billing and Coding: Breast Imaging: Breast Echography (Sonography)/Breast MRI/Ductography
  • A56448Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography

Alphabetic index entries that lead here

  • Atrophy, atrophic›breast

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under N64

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.