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N63.21

✓ Billable

Unspecified lump in the left breast, upper outer quadrant

Diseases of the genitourinary system (N00-N99)

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✅ No additional coding notes for N63.21

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Code Information

CodeN63.21
BillableYes
ParentN63.2
CategoryDiseases of the genitourinary system (N00-N99)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)