N63.31✓ Billable
Unspecified lump in axillary tail of the right breast
Code Hierarchy
┌14Diseases of the genitourinary system (N00-N99)├N60-N65Disorders of breast (N60-N65)├N63Unspecified lump in breast
└N63.31Unspecified lump in axillary tail of the right breast
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