MCMCB Pro
N65

N65Deformity and disproportion of reconstructed breast

Non-billable headerICD-10-CM

N65 is a non-billable header ICD-10-CM code for deformity and disproportion of reconstructed breast. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with N65

These codes carry an Excludes1 note pointing at N65. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading N65 alone.

  • N62Hypertrophy of breast
  • N64.81Ptosis of breast
  • N64.82Hypoplasia of breast
  • Z42.1Encounter for breast reconstruction following mastectomy

Risk adjustment

N65 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 N65

2 child codes. Green means billable.

Questions about N65

Is N65 a billable ICD-10-CM code?
No. N65 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does N65 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.