Abscess of breast associated with the puerperium

This code signifies a localized collection of pus within the breast tissue that develops during the postpartum period. This infection is typically a complication of mastitis, often occurring due to bacterial entry through cracked nipples during breastfeeding.

Apply this code when documentation clearly states a diagnosis of breast abscess occurring anytime from childbirth up to one year postpartum. Supporting documentation should include clinical findings such as a palpable, tender, fluctuant mass, fever, and purulent drainage, along with a clear association with the puerperal state.

• Ensure the documentation specifies "abscess" and not just "mastitis" for this code.
• Confirm the timing of the abscess onset falls within the puerperium (up to one year postpartum).
• Code any underlying mastitis (O91.11-) as an additional diagnosis if still present and being treated.