N63.21 - Unspecified lump in the left breast, upper outer quadrant
- Applicable to Unspecified lump in the left breast, upper outer quadrant
- The 2025 edition of ICD10-CM N63.21 became effective on October 1, 2024.
- This is the American ICD10-CM version of N63.21 - other international versions of ICD10 N63.21 may differ.
- N63.21 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The following codes above N63.21 contain annotation back-references that may be applicable to N63.21:
Chapter: N00-N99 Diseases of the genitourinary system
Section: N60-N65 Disorders of breast
Category: N63 Unspecified lump in breast
Billable/Specific Code
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Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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