N61.0

N61.0: Mastitis without abscess

Billable / specific codeICD-10-CM

N61.0 is a billable, specific ICD-10-CM code for mastitis without abscess. It is valid for submission on a claim.

Check N61.0 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Excludes1 inherited from the categories above N61.0

A category’s note binds every code beneath it.

Written on 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)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

N61.0 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52849Billing and Coding: Breast Imaging: Breast Echography (Sonography)/Breast MRI/Ductography
A56448Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography
A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax

Alphabetic index entries that lead here

Galactophoritis
Mammillitis
Mastitis(acute) (diffuse) (nonpuerperal) (subacute)
Thelitis
Cellulitis›breast(acute) (nonpuerperal) (subacute)
Cellulitis›nipple(acute) (nonpuerperal) (subacute)
Fistula›breast
Fistula›mammary(gland)
Infection, infected, infective›mammary gland
Infection, infected, infective›nipple
Inflammation, inflamed, inflammatory›areola
Inflammation, inflamed, inflammatory›breast

Code history

Unchanged in every release from FY2024 to FY2027.