Is N63 a billable code?
No. N63 is a header code that groups 17 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
N63: Unspecified lump in breast
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
N63 groups related diagnoses under unspecified lump in breast. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under N63
- N63.0Unspecified lump in unspecified breast
- N63.10Unspecified lump in the right breast, unspecified quadrant
- N63.11Unspecified lump in the right breast, upper outer quadrant
- N63.12Unspecified lump in the right breast, upper inner quadrant
- N63.13Unspecified lump in the right breast, lower outer quadrant
- N63.14Unspecified lump in the right breast, lower inner quadrant
- N63.15Unspecified lump in the right breast, overlapping quadrants
- N63.20Unspecified lump in the left breast, unspecified quadrant
- N63.21Unspecified lump in the left breast, upper outer quadrant
- N63.22Unspecified lump in the left breast, upper inner quadrant
- N63.23Unspecified lump in the left breast, lower outer quadrant
- N63.24Unspecified lump in the left breast, lower inner quadrant
- N63.25Unspecified lump in the left breast, overlapping quadrants
- N63.31Unspecified lump in axillary tail of the right breast
- N63.32Unspecified lump in axillary tail of the left breast
- N63.41Unspecified lump in right breast, subareolar
- N63.42Unspecified lump in left breast, subareolar
N63 questions
What does N63 mean?
N63 is the ICD-10-CM code for Unspecified lump in breast. It is in chapter 14, Diseases of the genitourinary system (N00-N99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.