| O23.0 | Infections of kidney in pregnancy | NON-BILLABLE CODE |
| O23.00 | Infections of kidney in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.01 | Infections of kidney in pregnancy, first trimester | BILLABLE CODE |
| O23.02 | Infections of kidney in pregnancy, second trimester | BILLABLE CODE |
| O23.03 | Infections of kidney in pregnancy, third trimester | BILLABLE CODE |
| O23.1 | Infections of bladder in pregnancy | NON-BILLABLE CODE |
| O23.10 | Infections of bladder in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.11 | Infections of bladder in pregnancy, first trimester | BILLABLE CODE |
| O23.12 | Infections of bladder in pregnancy, second trimester | BILLABLE CODE |
| O23.13 | Infections of bladder in pregnancy, third trimester | BILLABLE CODE |
| O23.2 | Infections of urethra in pregnancy | NON-BILLABLE CODE |
| O23.20 | Infections of urethra in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.21 | Infections of urethra in pregnancy, first trimester | BILLABLE CODE |
| O23.22 | Infections of urethra in pregnancy, second trimester | BILLABLE CODE |
| O23.23 | Infections of urethra in pregnancy, third trimester | BILLABLE CODE |
| O23.3 | Infections of other parts of urinary tract in pregnancy | NON-BILLABLE CODE |
| O23.30 | Infections of other parts of urinary tract in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.31 | Infections of other parts of urinary tract in pregnancy, first trimester | BILLABLE CODE |
| O23.32 | Infections of other parts of urinary tract in pregnancy, second trimester | BILLABLE CODE |
| O23.33 | Infections of other parts of urinary tract in pregnancy, third trimester | BILLABLE CODE |
| O23.4 | Unspecified infection of urinary tract in pregnancy | NON-BILLABLE CODE |
| O23.40 | Unspecified infection of urinary tract in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.41 | Unspecified infection of urinary tract in pregnancy, first trimester | BILLABLE CODE |
| O23.42 | Unspecified infection of urinary tract in pregnancy, second trimester | BILLABLE CODE |
| O23.43 | Unspecified infection of urinary tract in pregnancy, third trimester | BILLABLE CODE |
| O23.5 | Infections of the genital tract in pregnancy | NON-BILLABLE CODE |
| O23.51 | Infection of cervix in pregnancy | NON-BILLABLE CODE |
| O23.511 | Infections of cervix in pregnancy, first trimester | BILLABLE CODE |
| O23.512 | Infections of cervix in pregnancy, second trimester | BILLABLE CODE |
| O23.513 | Infections of cervix in pregnancy, third trimester | BILLABLE CODE |
| O23.519 | Infections of cervix in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.52 | Salpingo-oophoritis in pregnancy | NON-BILLABLE CODE |
| O23.521 | Salpingo-oophoritis in pregnancy, first trimester | BILLABLE CODE |
| O23.522 | Salpingo-oophoritis in pregnancy, second trimester | BILLABLE CODE |
| O23.523 | Salpingo-oophoritis in pregnancy, third trimester | BILLABLE CODE |
| O23.529 | Salpingo-oophoritis in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.59 | Infection of other part of genital tract in pregnancy | NON-BILLABLE CODE |
| O23.591 | Infection of other part of genital tract in pregnancy, first trimester | BILLABLE CODE |
| O23.592 | Infection of other part of genital tract in pregnancy, second trimester | BILLABLE CODE |
| O23.593 | Infection of other part of genital tract in pregnancy, third trimester | BILLABLE CODE |
| O23.599 | Infection of other part of genital tract in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.9 | Unspecified genitourinary tract infection in pregnancy | NON-BILLABLE CODE |
| O23.90 | Unspecified genitourinary tract infection in pregnancy, unspecified trimester | BILLABLE CODE |
| O23.91 | Unspecified genitourinary tract infection in pregnancy, first trimester | BILLABLE CODE |
| O23.92 | Unspecified genitourinary tract infection in pregnancy, second trimester | BILLABLE CODE |
| O23.93 | Unspecified genitourinary tract infection in pregnancy, third trimester | BILLABLE CODE |
