ICD10Check
CheckerBrowseOpen

N63.4

⚠ Non-billable (Header)

Unspecified lump in breast, subareolar

Diseases of the genitourinary system (N00-N99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code
✅ No additional coding notes for N63.4

Child Codes (2)

N63.41Unspecified lump in right breast, subareolarN63.42Unspecified lump in left breast, subareolar

🧪 Validate Combinations

Add N63.4 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeN63.4
BillableNo — Header code
ParentN63
CategoryDiseases of the genitourinary system (N00-N99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes2

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)