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N64 Other disorders of breast

ICD-10-CM category N64 sits in Chapter 14 (Diseases of the genitourinary system, N00-N99). It contains 13 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

N64.5 Other signs and symptoms in breastN64.8 Other specified disorders of breast

Billable codes in N64

CodeDescription
N64.0Fissure and fistula of nipple
N64.1Fat necrosis of breast
N64.2Atrophy of breast
N64.3Galactorrhea not associated with childbirth
N64.4Mastodynia
N64.51Induration of breast
N64.52Nipple discharge
N64.53Retraction of nipple
N64.59Other signs and symptoms in breast
N64.81Ptosis of breast
N64.82Hypoplasia of breast
N64.89Other specified disorders of breast
N64.9Disorder of breast, unspecified

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