ICD-10 Code N64.59

Other signs and symptoms in breast

Version 2019 Billable Code

Valid for Submission

N64.59 is a billable code used to specify a medical diagnosis of other signs and symptoms in breast. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

ICD-10: N64.59
Short Description:Other signs and symptoms in breast
Long Description:Other signs and symptoms in breast

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 mandated 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

Information for Medical Professionals

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). The diagnosis code N64.59 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.


Convert N64.59 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 611.79 - Symptoms in breast NEC (Approximate Flag)


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

  • Absent nipple
  • Areolas unequal in size
  • Bleeding from breast
  • Bleeding from nipple
  • Bleeding of surface of nipple
  • Breast changes
  • Breast cold
  • Breast depigmented
  • Breast disc palpable
  • Breast hot
  • Breast hypopigmented
  • Breast pigmented
  • Breast signs and symptoms
  • Breast symptom of change in nipple
  • Breast symptom of change in skin
  • Breast temperature - finding
  • Breast temperature - finding
  • Breasts asymmetrical
  • Chest swelling
  • Chest swelling
  • Complex sclerosing lesion of breast
  • Contour of breast distorted
  • Deformation of breast
  • Deformity of breast
  • Destructive lesion of nipple
  • Dimpling of surface of breast
  • Discoloration of nipple
  • Discoloration of skin of breast
  • Displacement of nipple
  • Edema of breast
  • Edema of nipple
  • Engorgement of breasts
  • Finding of color of breast
  • Finding of color of breast
  • Finding of color of breast
  • Finding of color of breast
  • Finding of color of breast
  • Finding of color of nipple
  • Finding of color of nipple
  • Finding of color of nipple
  • Finding of color of nipple
  • Finding of consistency of breast
  • Finding of flow of breast milk
  • Finding of form of nipple
  • Finding of pattern of breast function
  • Finding of proportion of nipple
  • Finding of quantity of lactation
  • Finding of sensation of nipple
  • Flat nipple
  • Foreign body of breast
  • Foreign body of skin of breast
  • Foreign body of skin of chest
  • Hair sinus
  • Hair sinus of breast
  • Increase in surface veins of breast
  • Inversion of nipple
  • Lactiferous duct palpable
  • Lactiferous duct prominent
  • Lactiferous ducts finding
  • Lactiferous ducts finding
  • Large areola
  • Large nipple
  • Lesion of nipple
  • Milk leaking from breast
  • Nipple bleeding
  • Nipple deformity
  • Nipple depigmented
  • Nipple hypopigmented
  • Nipple painful
  • Nipples unequal in size
  • O/E - breast asymmetry
  • O/E - breast swollen
  • O/E - nipple discharge
  • O/E - peau d'orange
  • O/E - veins visible on breast
  • On examination - nipple discharge-blood-dark
  • Peau d'orange surface of breast
  • Position of nipple - finding
  • Red breast
  • Red nipple
  • Shape of breasts unequal
  • Sinus of breast
  • Size of breast - finding
  • Size of breasts unequal
  • Size of nipple - finding
  • Size of nipple - finding
  • Small breast
  • Small nipple
  • Soft breast
  • Sore nipple
  • Surface characteristics of breast - finding
  • Surface characteristics of breast - finding
  • Swelling of breast
  • Swelling of breast
  • Swelling of nipple
  • Symmetry of breasts - finding
  • Thickening of skin
  • Thickening of skin of breast
  • Veins visible on breast
  • Wide spaced nipples

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 N64.59 are found in the index:

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

  • Breast - premenstrual tenderness and swelling (Medical Encyclopedia)
  • Breast biopsy -- stereotactic (Medical Encyclopedia)
  • Breast biopsy -- ultrasound (Medical Encyclopedia)
  • Breast infection (Medical Encyclopedia)
  • Breast lump (Medical Encyclopedia)
  • Breast MRI scan (Medical Encyclopedia)
  • Breast pain (Medical Encyclopedia)
  • Breast self exam (Medical Encyclopedia)
  • Breast skin and nipple changes (Medical Encyclopedia)
  • Fibroadenoma - breast (Medical Encyclopedia)
  • Fibrocystic breast disease (Medical Encyclopedia)
  • Gynecomastia (Medical Encyclopedia)
  • Intraductal papilloma (Medical Encyclopedia)
  • Nipple problems (Medical Encyclopedia)

[Learn More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.