N63.21
N63.21: Unspecified lump in the left breast, upper outer quadrant
Billable / specific codeICD-10-CMleft
N63.21 is a billable, specific ICD-10-CM code for unspecified lump in the left breast, upper outer quadrant. It is valid for submission on a claim.
Check N63.21 with the rest of the claim: free scrubberRisk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
N63.21 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A52849Billing and Coding: Breast Imaging: Breast Echography (Sonography)/Breast MRI/Ductography
- A56448Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
Alphabetic index entries that lead here
- Lump›breast›left›upper outer quadrant
Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under N63.2
- N63.20Unspecified lump in the left breast, unspecified 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