MCMCB Pro
N64.8

N64.8Other specified disorders of breast

Non-billable headerICD-10-CM

N64.8 is a non-billable header ICD-10-CM code for other specified disorders of breast. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

N64.8 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead N64.8

3 child codes. Green means billable.

Related codes at this level

Codes that share N64. If N64.8 is not quite right, the correct code is usually one of these.

Questions about N64.8

Is N64.8 a billable ICD-10-CM code?
No. N64.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does N64.8 sit in the tabular list?
Diseases of the genitourinary system (N00-N99), in the block Disorders of breast (N60-N65).
ICD-10-CMFY2026-Apr· effective April 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.