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N61.0

✓ Billable

Mastitis without abscess

Diseases of the genitourinary system (N00-N99)

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Also Known As

Infective mastitis (acute) (nonpuerperal) (subacute)Mastitis (acute) (nonpuerperal) (subacute) NOSCellulitis (acute) (nonpuerperal) (subacute) of breast NOSCellulitis (acute) (nonpuerperal) (subacute) of nipple NOS

❌ Excludes1

inherited from N61

Rules from parent category N61: Inflammatory disorders of breast

  • • inflammatory carcinoma of breast (C50.A-)
  • • inflammatory disorder of breast associated with childbirth (O91.-)
  • • neonatal infective mastitis (P39.0)
  • • thrombophlebitis of breast [Mondor's disease] (I80.8)

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Code Information

CodeN61.0
BillableYes
ParentN61
CategoryDiseases of the genitourinary system (N00-N99)
Excludes14 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)