All ICD10 Codes

N63.4

Non-Billable
ChapterN00–N99
Ranksubcategory
Official Description

Unspecified lump in breast, subareolar

Use a more specific code (2 billable)
N63.41Unspecified lump in right breast, subareolarN63.42Unspecified lump in left breast, subareolar
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).
General instructions are available for the parent sections:
View CH14 NotesView N60-N65 NotesView N63 Notes

Clinical Hierarchy

BillableHas subcodes
CH14Diseases of the genitourinary system (N00-N99)
N60-N65Disorders of breast (N60-N65)
N63Unspecified lump in breast
N63.4Unspecified lump in breast, subareolarNot billable
N63.41Unspecified lump in right breast, subareolarBillable
N63.42Unspecified lump in left breast, subareolarBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N63.4:

categoryN63
Unspecified lump in breast
View context instructions
blockN60-N65
Disorders of breast (N60-N65)
View context instructions
chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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