N63.2Header code — not billable
Unspecified lump in the left breast
- Chapter
- 14. Diseases of the genitourinary system
- Category
- N63
- Effective date
- October 1, 2026
Related codes in category N63
N63Unspecified lump in breastN63.0Unspecified lump in unspecified breastYesN63.1Unspecified lump in the right breastN63.10Unspecified lump in the right breast, unspecified quadrantYesN63.11Unspecified lump in the right breast, upper outer quadrantYesN63.12Unspecified lump in the right breast, upper inner quadrantYesN63.13Unspecified lump in the right breast, lower outer quadrantYesN63.14Unspecified lump in the right breast, lower inner quadrantYesN63.15Unspecified lump in the right breast, overlapping quadrantsYesN63.20Unspecified lump in the left breast, unspecified quadrantYesN63.21Unspecified lump in the left breast, upper outer quadrantYesN63.22Unspecified lump in the left breast, upper inner quadrantYes
Frequently asked questions
What is ICD-10 code N63.2?
N63.2 is an ICD-10-CM diagnosis code for Unspecified lump in the left breast.
Is N63.2 a billable code?
No. N63.2 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is N63.2 in?
N63.2 falls under Chapter 14: Diseases of the genitourinary system.
When did N63.2 become effective?
N63.2 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to N63.2?
N63.2 belongs to category N63, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.