2027 ICD-10-CM Diagnosis Code N65Deformity and disproportion of reconstructed breast

ICD-10-CM Codes›N00–N99›N60-N65›N65

ICD-10-CM N65
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N65 is a non-billable ICD-10-CM category code for deformity and disproportion of reconstructed breast, so it cannot be submitted on claims. Use a more specific code from this category instead, such as N65.0 and N65.1.

Code Identity

ICD-10-CM Code
N65
Billable Status
No — Non-Billable Category
Code Describes
Deformity and disproportion of reconstructed breast
Short Description
Deformity and disproportion of reconstructed breast
Same as the full description in the CMS dataset.
Chapter
N60-N65
Disorders of breast

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN60-N65Disorders of breast
CategoryN65Deformity and disproportion of reconstructed breast
This CodeN65Deformity and disproportion of reconstructed breast

Specific Coding for Deformity and disproportion of reconstructed breastOverview

Non-specific codes like N65 require more characters. Use one of these billable codes instead:

  • Use N65.0 for Deformity of reconstructed breast

  • Use N65.1 for Disproportion of reconstructed breast

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N65: its own notes plus those printed at block N60-N65 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block N60-N65 Disorders of breast applies to 60 codes
  • disorders of breast associated with childbirth (O91-O92)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Patient EducationClinical

Breast Diseases

Breast diseases include various conditions and changes in your breast. Most women experience breast changes at some time. Your age, hormone levels, and medicines you take may cause lumps, bumps, and discharges of fluids that are not breast milk.

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Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N65Overview

What is the ICD-10 code for deformity and disproportion of reconstructed breast?

N65 is the ICD-10-CM category for deformity and disproportion of reconstructed breast, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is N65 (Deformity and disproportion of reconstructed breast) a billable code?

No. This is a category header that groups the codes for deformity and disproportion of reconstructed breast, and headers cannot be submitted on claims. Claims for deformity and disproportion of reconstructed breast need a more specific code from this category, such as N65.0 and N65.1.