Hypertrophy of breast
In Disorders of breast (N60-N65), chapter 14: Diseases of the Genitourinary System
- N62 is billable and valid on claims for FY 2027. If the record has more detail, check the other codes under N60-N65 below.
- As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
- Doesn't count toward a Medicare Advantage risk score (no HCC in V28).
- AHRQ's Chronic Condition Indicator classes it as chronic: expected to last 12 months or longer and to limit daily life or need ongoing care.
Also indexed as: Excess, development, breast; Gynecomastia; Hyperplasia, epithelial, nipple; Hypertrophy, breast; Hypertrophy, breast, pubertal, massive; Hypertrophy, breast, senile; Hypertrophy, nipple; Mammoplasia; Mastoplasia
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Instructional notes
Also applies, from Disorders of breast (N60-N65)
These notes sit on N60-N65 and apply to every code under it, including N62.
Excludes1: not coded here, use a different code
- disorders of breast associated with childbirth (O91-O92)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers chronic kidney disease staging, CKD in kidney transplant patients, and sequencing CKD with related conditions such as diabetes and hypertension.
- Chronic kidney disease (page 62)
Other codes under N60-N65
Disorders of breast (N60-N65)
N62 MS-DRGs
As the principal diagnosis, N62 groups to MS-DRG 600 or 601 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Related conditions
Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.
N62 is in Nonmalignant breast conditions (GEN017, its default category), with 84 codes. Others in it:
- N60.01 Solitary cyst of right breast
- N60.02 Solitary cyst of left breast
- N60.09 Solitary cyst of unspecified breast
- N60.11 Diffuse cystic mastopathy of right breast
- N60.12 Diffuse cystic mastopathy of left breast
- N60.19 Diffuse cystic mastopathy of unspecified breast
- N60.21 Fibroadenosis of right breast
- N60.22 Fibroadenosis of left breast
Medicare coverage articles listing N62
These 5 Medicare billing and coding articles list N62 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.
Other codes that refer to N62
Notes on these codes point to N62.
- E20-E35 Excludes1: gynecomastia (N62)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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.
Read more about breast diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.
ICD-9-CM equivalent
Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).
- 611.1 Hypertrophy of breast