N63

Non-billable

Unspecified lump in breast

N63 is the ICD-10-CM code for Unspecified lump in breast. It is a non-billable category code — use a more specific child code such as N63.0 for billing.

Status
Header (non-billable)
Chapter
N00-N99
Subcodes
5
Edition
FY2026

N00-N99 Diseases of the genitourinary system

Includes

  • Nodule(s) NOS in breast

Frequently asked questions

What is ICD-10 code N63?
N63 is the ICD-10-CM code for "Unspecified lump in breast". It falls under N00-N99 Diseases of the genitourinary system.
Is N63 a billable code?
No — N63 is a non-billable header code. Use a more specific child code (such as N63.0) for billing.
What are the subcodes of N63?
N63 has 5 more specific child codes, including N63.0, N63.1, N63.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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