ICD-10-CM FY2027 diagnosis code

N63.23: Unspecified lump in the left breast, lower outer quadrant

Billable codeValid for dates of service October 1, 2026 to September 30, 2027

N63.23 is a billable ICD-10-CM diagnosis code for unspecified lump in the left breast, lower outer quadrant. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.

N63.23 questions

Is N63.23 a billable code?

Yes. N63.23 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.

What does N63.23 mean?

N63.23 is the ICD-10-CM code for Unspecified lump in the left breast, lower outer quadrant. 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.