ICD-10-CM P39.0 is the diagnosis code for Neonatal infective mastitis. This code falls under the section "Infections specific to the perinatal period" within Chapter 16 — Certain conditions originating in the perinatal period (P00-P96). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as P39.0. They are mutually exclusive:
Understanding where P39.0 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, P39.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
P39.0 is the ICD-10-CM diagnosis code for "Neonatal infective mastitis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of P39.0 is P39 ("Other infections specific to the perinatal period"). P39.0 provides a more specific classification within this category.
P39.0 is located in Section P35-P39 — "Infections specific to the perinatal period" within Chapter 16 of the ICD-10-CM Tabular List.
Use P39.0 when the patients documented diagnosis matches "Neonatal infective mastitis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Neonatal infective mastitis is P39.0.
Yes, P39.0 can be used as a primary diagnosis code since it is billable and specific.
P39.0 is in Chapter 16 of the ICD-10-CM Tabular List.
Type 1 Excludes for P39.0 include: breast engorgement of newborn (P83.4); noninfective mastitis of newborn (P83.4).
Yes, P39.0 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.