1. 2023 ICD-10-CM Index
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2. 'M' Terms
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3. Index Terms Starting With 'M' (Mastitis)

Index Terms Starting With 'M' (Mastitis)

• Mastitis (acute) (diffuse) (nonpuerperal) (subacute) N61.0

  ICD-10-CM Diagnosis Code N61.0

  Mastitis without abscess

  2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

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

  • chronic (cystic) - see Mastopathy, cystic
  • cystic (Schimmelbusch's type) - see Mastopathy, cystic
  • fibrocystic - see Mastopathy, cystic
  • granulomatous N61.2-
    ICD-10-CM Diagnosis Code N61.2-

    Granulomatous mastitis

    2021 - New Code 2022 2023 Non-Billable/Non-Specific Code
  • infective N61.0
    ICD-10-CM Diagnosis Code N61.0

    Mastitis without abscess

    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Infective mastitis (acute) (nonpuerperal) (subacute)
    • Mastitis (acute) (nonpuerperal) (subacute) NOS
    • Cellulitis (acute) (nonpuerperal) (subacute) of breast NOS
    • Cellulitis (acute) (nonpuerperal) (subacute) of nipple NOS
    • newborn P39.0
      ICD-10-CM Diagnosis Code P39.0

      Neonatal infective mastitis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record

      Type 1 Excludes

      • breast engorgement of newborn (P83.4)
      • noninfective mastitis of newborn (P83.4)
  • interstitial, gestational or puerperal - see Mastitis, obstetric
  • neonatal (noninfective) P83.4
    ICD-10-CM Diagnosis Code P83.4

    Breast engorgement of newborn

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record

    Applicable To

    • Noninfective mastitis of newborn
    • infective P39.0
      ICD-10-CM Diagnosis Code P39.0

      Neonatal infective mastitis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record

      Type 1 Excludes

      • breast engorgement of newborn (P83.4)
      • noninfective mastitis of newborn (P83.4)
  • obstetric (interstitial) (nonpurulent)
    • associated with
      • lactation O91.23
        ICD-10-CM Diagnosis Code O91.23

        Nonpurulent mastitis associated with lactation

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx

        Applicable To

        • Interstitial mastitis associated with lactation
        • Lymphangitis of breast associated with lactation
        • Mastitis NOS associated with lactation
        • Parenchymatous mastitis associated with lactation
      • pregnancy O91.21-
        ICD-10-CM Diagnosis Code O91.21-

        Nonpurulent mastitis associated with pregnancy

        2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code

        Applicable To

        • Gestational interstitial mastitis
        • Gestational lymphangitis of breast
        • Gestational mastitis NOS
        • Gestational parenchymatous mastitis
      • puerperium O91.22
        ICD-10-CM Diagnosis Code O91.22

        Nonpurulent mastitis associated with the puerperium

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx

        Applicable To

        • Puerperal interstitial mastitis
        • Puerperal lymphangitis of breast
        • Puerperal mastitis NOS
        • Puerperal parenchymatous mastitis
    • purulent
      • associated with
        • lactation O91.13
          ICD-10-CM Diagnosis Code O91.13

          Abscess of breast associated with lactation

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx

          Applicable To

          • Mammary abscess associated with lactation
          • Purulent mastitis associated with lactation
          • Subareolar abscess associated with lactation
        • pregnancy O91.11-
          ICD-10-CM Diagnosis Code O91.11-

          Abscess of breast associated with pregnancy

          2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code

          Applicable To

          • Gestational mammary abscess
          • Gestational purulent mastitis
          • Gestational subareolar abscess
        • puerperium O91.12
          ICD-10-CM Diagnosis Code O91.12

          Abscess of breast associated with the puerperium

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx

          Applicable To

          • Puerperal mammary abscess
          • Puerperal purulent mastitis
          • Puerperal subareolar abscess
  • periductal - see Ectasia, mammary duct
  • phlegmonous - see Mastopathy, cystic
  • plasma cell - see Ectasia, mammary duct
  • with abscess N61.1
    ICD-10-CM Diagnosis Code N61.1

    Abscess of the breast and nipple

    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Abscess (acute) (chronic) (nonpuerperal) of areola
    • Abscess (acute) (chronic) (nonpuerperal) of breast
    • Carbuncle of breast
    • Mastitis with abscess
  • without abscess N61.0
    ICD-10-CM Diagnosis Code N61.0

    Mastitis without abscess

    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

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