2020 ICD-10-CM Diagnosis Code N62

Hypertrophy of breast

    2016 2017 2018 2019 2020 Billable/Specific Code
  • N62 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 N62 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N62 - other international versions of ICD-10 N62 may differ.
Applicable To
  • Gynecomastia
  • Hypertrophy of breast NOS
  • Massive pubertal hypertrophy of breast
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as N62. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • breast engorgement of newborn (
    ICD-10-CM Diagnosis Code P83.4

    Breast engorgement of newborn

      2016 2017 2018 2019 2020 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Noninfective mastitis of newborn
    P83.4
    )
  • disproportion of reconstructed breast (
    ICD-10-CM Diagnosis Code N65.1

    Disproportion of reconstructed breast

      2016 2017 2018 2019 2020 Billable/Specific Code Adult Dx (15-124 years)
    Applicable To
    • Breast asymmetry between native breast and reconstructed breast
    • Disproportion between native breast and reconstructed breast
    N65.1
    )
The following code(s) above N62 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 N62:
  • 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
Approximate Synonyms
  • Atypical lobular hyperplasia
  • Atypical lobular hyperplasia of breast
  • Atypical lobular hyperplasia of left breast
  • Atypical lobular hyperplasia of right breast
  • Gynecomastia
  • Pseudoangiomatous stromal hyperplasia of breast
Clinical Information
  • A disorder characterized by excessive development of the breasts in males.
  • Enlargement of the breast in the males, caused by an excess of estrogens. Physiological gynecomastia is normally observed in newborns; adolescent; and aging males.
  • Excessive development of the breasts in males; usually the result of hormonal imbalance or treatment with certain drugs.
  • Excessive enlargement of one or both breasts. Causes include pregnancy, obesity, and penicillamine therapy. It may result in neck, back, and shoulder pain.
  • Female mammary morphology in a xy genotype.
ICD-10-CM N62 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 N62 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 N62:

ICD-10-CM Codes Adjacent To N62
N60.81 …… of right breast
N60.82 …… of left breast
N60.89 …… of unspecified breast
N60.9 Unspecified benign mammary dysplasia
N60.91 …… of right breast
N60.92 …… of left breast
N60.99 …… of unspecified breast
N61 Inflammatory disorders of breast
N61.0 Mastitis without abscess
N61.1 Abscess of the breast and nipple
N62 Hypertrophy of breast
N63 Unspecified lump in breast
N63.0 Unspecified lump in unspecified breast
N63.1 Unspecified lump in the right breast
N63.10 …… unspecified quadrant
N63.11 …… upper outer quadrant
N63.12 …… upper inner quadrant
N63.13 …… lower outer quadrant
N63.14 …… lower inner quadrant
N63.15 …… overlapping quadrants
N63.2 Unspecified lump in the left breast

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