O23.11
Infections of bladder in pregnancy, first trimester
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 12 never code together
O23code
Excludes2
- gonococcal infections complicating pregnancy, childbirth and the puerperium (O98.2)O98.2
- infections with a predominantly sexual mode of transmission NOS complicating pregnancy, childbirth and the puerperium (O98.3)O98.3
- syphilis complicating pregnancy, childbirth and the puerperium (O98.1)O98.1
- tuberculosis of genitourinary system complicating pregnancy, childbirth and the puerperium (O98.0)O98.0
- venereal disease NOS complicating pregnancy, childbirth and the puerperium (O98.3)O98.3
O20-O29block
O00-O9Achapter
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 8
O00-O9Achapter
Notes
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Use additional code
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.Z3A
Index entries leading here 1
Alongside this code 3 same parent — O23.1
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.