N63.1 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Unspecified lump in the right breast.
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Unspecified lump in the right breast, unspecified quadrant
Unspecified lump in the right breast, upper outer quadrant
Unspecified lump in the right breast, upper inner quadrant
Unspecified lump in the right breast, lower outer quadrant
Unspecified lump in the right breast, lower inner quadrant
Unspecified lump in the right breast, overlapping quadrants
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