2027 ICD-10-CM Diagnosis Code N62Hypertrophy of breast
ICD-10-CM Codes›N00–N99›N60-N65›N62
- Billable — Valid for Submission
- Chronic Condition
N62 is a billable ICD-10-CM diagnosis code for hypertrophy of breast. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 600 through 601. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nonmalignant breast conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abnormally short little finger
- Atypical ductal hyperplasia of breast
- Atypical hyperplasia of breast
- Atypical lobular hyperplasia of breast
- Breast lobule hyperplasia
- Familial juvenile hypertrophy of breast
- Finding related to development of the breasts
- Gigantomastia
- Gynecomastia
- Gynecomastia caused by drug
- Gynecomastia caused by human chorionic gonadotrophin
- Hyperplasia of mammary duct
- Hypertrophy of breast
- Hypertrophy of gland of Montgomery
- Hypoplasia of distal phalanx of foot
- Idiopathic gynecomastia
- Infantile breast hypertrophy
- Large breast
- Mammary digital nail syndrome
- Massive pubertal hypertrophy of breast
- Overdeveloped breasts
- Pseudoangiomatous stromal hyperplasia of breast
- Pubertal breast hypertrophy
- Pubertal gynecomastia
- Size of breast - finding
- Thelarche
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N62: 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.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Gynecomastia
- Hypertrophy of breast NOS
- Massive pubertal hypertrophy of breast
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
- 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.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name N62, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming N62: they are not reported together with it, unless the two conditions are unrelated.
- Block E20-E35 Disorders of other endocrine glandsgynecomastia (N62)
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Gynecomastia N62
Mammoplasia N62
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Gynecomastia
enlargement of the breast in the males, caused by an excess of estrogens. physiological gynecomastia is normally observed in newborns; adolescent; and aging males.
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.
The full article covers:
- What are breast diseases?
- What are the symptoms of breast disease?
- How are breast diseases diagnosed?
- What are the treatments for breast disease?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N62 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N62Overview
What is the ICD-10 code for hypertrophy of breast?
The ICD-10-CM code for hypertrophy of breast is N62. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N62 (Hypertrophy of breast) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report hypertrophy of breast on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N62 group to?
When hypertrophy of breast is the principal diagnosis on an inpatient stay, it groups to MS-DRG 600, 601, with relative weights from 0.6014 to 0.9971 depending on complications. Higher weights mean higher Medicare reimbursement.
Can N62 be reported with P83.4?
Not as a rule. The Excludes1 note on N62 lists "breast engorgement of newborn (P83.4)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of N62?
Under the General Equivalence Mappings, hypertrophy of breast converts to ICD-9-CM 611.1 (hypertrophy of breast). The mapping is a direct match.
