O91.2Nonpurulent mastitis associated with pregnancy, the puerperium and lactation

O91.2 is the ICD-10-CM diagnosis code for Nonpurulent mastitis associated with pregnancy, the puerperium and lactation. It belongs to category O91 (infections of breast associated with pregnancy, the puerperium and lactation), block O85-O92 (complications predominantly related to the puerperium) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within O91 (infections of breast associated with pregnancy, the puerperium and lactation), O91.2 is specifically for Nonpurulent mastitis associated with pregnancy, the puerperium and lactation. Related codes cover infection of nipple associated with pregnancy, the puerperium and lactation (O91.0) and abscess of breast associated with pregnancy, the puerperium and lactation (O91.1).

To report this condition, pick the subcode that matches the documentation: O91.21 (pregnancy), O91.22 (puerperium) and O91.23 (lactation).

Use an additional code to identify infection.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.