DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 14

N60-N65 Disorders of breast (N60-N65)

Block N60-N65 groups 6 categories with 60 billable codes in FY2027.

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N60-N65 Disorders of breast (N60-N65)

Neighbouring blocks

Categories
6
Billable codes
60
CC codes
0
MCC codes
0
HCC V28 codes
0
New FY2027
0

Categories in N60-N65

  • N60

    Benign mammary dysplasia

    Fibroadenosis, breast (chronic) (cystic) (diffuse) (periodic) (segmental) → N60.2-

    • 21 billable codes
  • N61

    Inflammatory disorders of breast

    Thelitis → N61.0

    • 6 billable codes
  • N62

    Hypertrophy of breast

    Mammoplasia → N62

    • Billable, no subdivisions
  • N63

    Unspecified lump in breast

    Lumpbreast → N63.0

    • 17 billable codes
  • N64

    Other disorders of breast

    Mastalgia → N64.4

    • 13 billable codes
  • N65

    Deformity and disproportion of reconstructed breast

    Irregular, irregularityreconstructed breast → N65.0

    • 2 billable codes

Index main terms

  • Lump → N63 (17 entries)
  • Complication(s) (from) (of) → N65 (5 entries)
  • Mastitis (acute) (diffuse) (nonpuerperal) (subacute) → N61 (5 entries)
  • Mastopathy, mastopathia → N60, N64 (5 entries)
  • Hyperplasia, hyperplastic → N60, N62 (4 entries)
  • Hypertrophy, hypertrophic → N62 (4 entries)
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) → N61 (3 entries)
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) → N61 (3 entries)
  • Deformity → N64, N65 (3 entries)
  • Disease, diseased → N64 (3 entries)
  • Fistula (cutaneous) → N61, N64 (3 entries)
  • Inflammation, inflamed, inflammatory (with exudation) → N61 (3 entries)
  • Necrosis, necrotic (ischemic) → N64 (3 entries)
  • Cyst (colloid) (mucous) (simple) (retention) → N60, N64 (2 entries)
  • Degeneration, degenerative → N64 (2 entries)

+53 more main terms; the search box finds them by word.

Block instructions

Excludes1

  • disorders of breast associated with childbirth (O91-O92) O91 O92

Notes that also apply

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