DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

N63 Unspecified lump in breast

  • Header · not billable

N63 is not billable. The category heads 17 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N60-N65 Disorders of breast (N60-N65)
  3. N63 Unspecified lump in breast
Billable codes
17
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
21

Codes in N63

  1. N63.0
    Unspecified lump in unspecified breast
    Billable
  2. N63.1
    Unspecified lump in the right breast
    Header
  3. N63.10
    Unspecified lump in the right breast, unspecified quadrant
    Billable
  4. N63.11
    Unspecified lump in the right breast, upper outer quadrant
    Billable
  5. N63.12
    Unspecified lump in the right breast, upper inner quadrant
    Billable
  6. N63.13
    Unspecified lump in the right breast, lower outer quadrant
    Billable
  7. N63.14
    Unspecified lump in the right breast, lower inner quadrant
    Billable
  8. N63.15
    Unspecified lump in the right breast, overlapping quadrants
    Billable
  9. N63.2
    Unspecified lump in the left breast
    Header
  10. N63.20
    Unspecified lump in the left breast, unspecified quadrant
    Billable
  11. N63.21
    Unspecified lump in the left breast, upper outer quadrant
    Billable
  12. N63.22
    Unspecified lump in the left breast, upper inner quadrant
    Billable
  13. N63.23
    Unspecified lump in the left breast, lower outer quadrant
    Billable
  14. N63.24
    Unspecified lump in the left breast, lower inner quadrant
    Billable
  15. N63.25
    Unspecified lump in the left breast, overlapping quadrants
    Billable
  16. N63.3
    Unspecified lump in axillary tail
    Header
  17. N63.31
    Unspecified lump in axillary tail of the right breast
    Billable
  18. N63.32
    Unspecified lump in axillary tail of the left breast
    Billable
  19. N63.4
    Unspecified lump in breast, subareolar
    Header
  20. N63.41
    Unspecified lump in right breast, subareolar
    Billable
  21. N63.42
    Unspecified lump in left breast, subareolar
    Billable

Sources of each column.

Instructions

At N63

Inclusion terms

  • Nodule(s) NOS in breast

Notes that also apply

Block N60-N65 instructions (Excludes1 1): printed on the block page.

Chapter 14 instructions (Excludes2 8): printed on the chapter 14 page.

Index entries

  • Breastnodule → N63.0
  • Lumpbreast → N63.0
  • Massbreast → N63.0
  • Nodule(s), nodularbreast NEC → N63.0
  • Swelling (of)breast → N63.0
  • Lumpbreastrightunspecified quadrant → N63.10
  • Lumpbreastrightupper outer quadrant → N63.11
  • Lumpbreastrightupper inner quadrant → N63.12
  • Lumpbreastrightlower outer quadrant → N63.13
  • Lumpbreastrightlower inner quadrant → N63.14
  • Lumpbreastrightoverlapping quadrants → N63.15
  • Lumpbreastleftunspecified quadrant → N63.20
  • Lumpbreastleftupper outer quadrant → N63.21
  • Lumpbreastleftupper inner quadrant → N63.22
  • Lumpbreastleftlower outer quadrant → N63.23
  • Lumpbreastleftlower inner quadrant → N63.24
  • Lumpbreastleftoverlapping quadrants → N63.25
  • Lumpbreastaxillary tailright → N63.31
  • Lumpbreastaxillary tailleft → N63.32
  • Lumpbreastsubareolarright → N63.41
  • Lumpbreastsubareolarleft → N63.42

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy