2020 ICD-10-CM Diagnosis Code N64.89

Other specified disorders of breast

    2016 2017 2018 2019 2020 Billable/Specific Code
  • N64.89 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM N64.89 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N64.89 - other international versions of ICD-10 N64.89 may differ.
Applicable To
  • Galactocele
  • Subinvolution of breast (postlactational)
The following code(s) above N64.89 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to N64.89:
  • N00-N99
    2020 ICD-10-CM Range N00-N99

    Diseases of the genitourinary system

    Type 2 Excludes
    • 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)
    Diseases of the genitourinary system
  • N60-N65
    2020 ICD-10-CM Range N60-N65

    Disorders of breast

    Type 1 Excludes
    • disorders of breast associated with childbirth (O91-O92)
    Disorders of breast
  • N64
    ICD-10-CM Diagnosis Code N64

    Other disorders of breast

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • mechanical complication of breast prosthesis and implant (T85.4-)
    Other disorders of breast
Approximate Synonyms
  • Asymmetry of breasts
  • Bilateral mastectomy deformities
  • Bilateral mastectomy deformity
  • Bilateral pendulous breasts
  • Breast hematoma
  • Breast hematoma due to non-traumatic cause
  • Breast seroma after procedure
  • Breasts asymmetrical
  • Hematoma of breast after procedure
  • Lactocele
  • Left breast duct occlusion
  • Left breast hematoma
  • Left breast radial scar
  • Left pendulous breast
  • Nontraumatic hematoma of breast
  • Nontraumatic hematoma of left breast
  • Nontraumatic hematoma of right breast
  • Nontraumatic left breast hematoma
  • Nontraumatic right breast hematoma
  • Occlusion of breast duct
  • Occlusion of left breast duct
  • Occlusion of right breast duct
  • Pendulous breast
  • Postpartum subinvolution of breast
  • Postprocedural hematoma of breast
  • Radial scar of breast
  • Radial scar of left breast
  • Radial scar of right breast
  • Right breast duct occlusion
  • Right breast hematoma
  • Right breast radial scar
  • Right pendulous breast
  • Seroma of breast as complication of procedure
Clinical Information
  • Single or multiple, milk-containing nodules in the breast. It is caused by obstruction of the breast ducts during lactation. Needle aspiration of the milk is the treatment of choice.
ICD-10-CM N64.89 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 597 Malignant breast disorders with mcc
  • 598 Malignant breast disorders with cc
  • 599 Malignant breast disorders without cc/mcc
  • 600 Non-malignant breast disorders with cc/mcc
  • 601 Non-malignant breast disorders without cc/mcc

Convert N64.89 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to N64.89:
  • Cyst (colloid) (mucous) (simple) (retention)
    • milk N64.89
  • Deformity Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • breast (acquired) N64.89
    • nipple (congenital) Q83.9
      ICD-10-CM Diagnosis Code Q83.9

      Congenital malformation of breast, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      • acquired N64.89
  • Degeneration, degenerative
    • breast N64.89
    • nipple N64.89
  • Disease, diseased - see also Syndrome
    • breast N64.9
      - see also Disorder, breast
      ICD-10-CM Diagnosis Code N64.9

      Disorder of breast, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • specified NEC N64.89
  • Disorder (of) - see also Disease
    • breast N64.9
      ICD-10-CM Diagnosis Code N64.9

      Disorder of breast, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • specified type NEC N64.89
  • Galactocele (breast) N64.89
  • Hematoma (traumatic) (skin surface intact) - see also Contusion
    • breast N64.89 (nontraumatic)
  • Infarct, infarction
    • breast N64.89
  • Mastopathy, mastopathia N64.9
    ICD-10-CM Diagnosis Code N64.9

    Disorder of breast, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • estrogenic, oestrogenica N64.89
    • ovarian origin N64.89
  • Occlusion, occluded
    • mammary duct N64.89
  • Pendulous
    • breast N64.89
  • Subinvolution
    • breast N64.89 (postlactational) (postpuerperal)
  • Unilateral - see also condition
    • development, breast N64.89

ICD-10-CM Codes Adjacent To N64.89
N64.3 Galactorrhea not associated with childbirth
N64.4 Mastodynia
N64.5 Other signs and symptoms in breast
N64.51 Induration of breast
N64.52 Nipple discharge
N64.53 Retraction of nipple
N64.59 Other signs and symptoms in breast
N64.8 Other specified disorders of breast
N64.81 Ptosis of breast
N64.82 Hypoplasia of breast
N64.89 Other specified disorders of breast
N64.9 Disorder of breast, unspecified
N65 Deformity and disproportion of reconstructed breast
N65.0 Deformity of reconstructed breast
N65.1 Disproportion of reconstructed breast
N70 Salpingitis and oophoritis
N70.0 Acute salpingitis and oophoritis
N70.01 Acute salpingitis
N70.02 Acute oophoritis
N70.03 Acute salpingitis and oophoritis
N70.1 Chronic salpingitis and oophoritis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.