| O91.11 | Abscess of breast associated with pregnancy | NON-BILLABLE CODE |
| O91.111 | Abscess of breast associated with pregnancy, first trimester | BILLABLE CODE |
| O91.112 | Abscess of breast associated with pregnancy, second trimester | BILLABLE CODE |
| O91.113 | Abscess of breast associated with pregnancy, third trimester | BILLABLE CODE |
| O91.119 | Abscess of breast associated with pregnancy, unspecified trimester | BILLABLE CODE |
| O91.12 | Abscess of breast associated with the puerperium | BILLABLE CODE |
| O91.13 | Abscess of breast associated with lactation | BILLABLE CODE |
