ICD-10-CM Code N64.89

Other specified disorders of breast

Version 2020 Billable Code OB/GYN

Valid for Submission

N64.89 is a billable code used to specify a medical diagnosis of other specified disorders of breast. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code N64.89 might also be used to specify conditions or terms like abnormal breast function, abnormal breast nipple shape, bleeding from breast, bleeding from breast, breast hematoma, breast hematoma, etc

The code is commonly used in ob/gyn medical specialties to specify clinical concepts such as lump in breast and other disorders of the breast.

Short Description:Other specified disorders of breast
Long Description:Other specified disorders of breast

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code N64.89:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Galactocele
  • Subinvolution of breast (postlactational)

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code N64.89 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Abnormal breast function
  • Abnormal breast nipple shape
  • Bleeding from breast
  • Bleeding from breast
  • Breast hematoma
  • Breast hematoma
  • Breast hematoma due to non-traumatic cause
  • Breast seroma
  • Breast seroma
  • Calcification of breast
  • Deformity of breast
  • Delayed development of the breasts
  • Diabetic mastopathy
  • Diffuse nodular calcifications of breast
  • Finding of pattern of breast function
  • Finding related to development of the breasts
  • Galactocele not associated with childbirth
  • Hyperplasia of mammary duct
  • Infarction of breast
  • Jogger's nipple
  • Lactiferous ducts finding
  • Lactocele
  • Nipple deformity
  • Obstruction of milk ducts
  • Occlusion of breast duct
  • Peau d'orange surface of breast
  • Pendulous breast
  • Perioperative hematoma
  • Post-mastectomy breast deformity
  • Postoperative hematoma formation
  • Postoperative hematoma of breast
  • Postpartum subinvolution of breast
  • Radial scar of breast
  • Seroma of breast as complication of procedure
  • Skin disorder of breast
  • Subinvolution of breast
  • Thelarche
  • Usual ductal hyperplasia of breast

Diagnostic Related Groups

The ICD-10 code N64.89 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert N64.89 to ICD-9

  • 611.5 - Galactocele (Approximate Flag)
  • 611.89 - Disorders breast NEC (Approximate Flag)

Code Classification

  • Diseases of the genitourinary system (N00–N99)
    • Disorders of breast (N60-N65)
      • Other disorders of breast (N64)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Breast Diseases

Most women experience breast changes at some time. Your age, hormone levels, and medicines you take may cause lumps, bumps, and discharges (fluids that are not breast milk).

If you have a breast lump, pain, discharge or skin irritation, see your health care provider. Minor and serious breast problems have similar symptoms. Although many women fear cancer, most breast problems are not cancer.

Some common breast changes are

  • Fibrocystic breast changes - lumpiness, thickening and swelling, often just before a woman's period
  • Cysts - fluid-filled lumps
  • Fibroadenomas - solid, round, rubbery lumps that move easily when pushed, occurring most in younger women
  • Intraductal papillomas - growths similar to warts near the nipple
  • Blocked milk ducts
  • Milk production when a woman is not breastfeeding

NIH: National Cancer Institute

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