All ICD10 Codes

N63

Non-Billable
ChapterN00–N99
Rankcategory
Official Description

Unspecified lump in breast

Use a more specific code (1 billable, 4 non-billable)
N63.0Unspecified lump in unspecified breastN63.1Unspecified lump in the right breasthas subcodesN63.2Unspecified lump in the left breasthas subcodesN63.3Unspecified lump in axillary tailhas subcodesN63.4Unspecified lump in breast, subareolarhas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).

CH14 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

N60-N65 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • disorders of breast associated with childbirth (O91-O92)

Instructional Notes

Includes
  • Nodule(s) NOS in breast

Clinical Hierarchy

BillableHas subcodes
CH14Diseases of the genitourinary system (N00-N99)
N60-N65Disorders of breast (N60-N65)
N63Unspecified lump in breastNot billable
N63.0Unspecified lump in unspecified breastBillable
N63.1Unspecified lump in the right breastSubcodes
N63.2Unspecified lump in the left breastSubcodes
N63.3Unspecified lump in axillary tailSubcodes
N63.4Unspecified lump in breast, subareolarSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N63:

blockN60-N65
Disorders of breast (N60-N65)
View context instructions
chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

Code History

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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