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N64.5

N64.5: Other signs and symptoms in breast

Non-billable headerICD-10-CM

N64.5 is a non-billable header ICD-10-CM code for other signs and symptoms in breast. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • abnormal findings on diagnostic imaging of breast (R92.-)

Excludes2 inherited from the categories above N64.5

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.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead N64.5

4 child codes. Green means billable.

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.