| O91.01 | Infection of nipple associated with pregnancy | NON-BILLABLE CODE |
| O91.011 | Infection of nipple associated with pregnancy, first trimester | BILLABLE CODE |
| O91.012 | Infection of nipple associated with pregnancy, second trimester | BILLABLE CODE |
| O91.013 | Infection of nipple associated with pregnancy, third trimester | BILLABLE CODE |
| O91.019 | Infection of nipple associated with pregnancy, unspecified trimester | BILLABLE CODE |
| O91.02 | Infection of nipple associated with the puerperium | BILLABLE CODE |
| O91.03 | Infection of nipple associated with lactation | BILLABLE CODE |
