ICD10
ICD-10 Code O23.1: Infections of bladder in pregnancy
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).
đź“‹Clinical overview
This ICD-10 overview page groups bladder-infection-in-pregnancy codes under a non-trimester parent code. The most accurate billable code usually depends on trimester timing and whether the record clearly supports bladder or lower urinary-tract infection rather than kidney infection or another pregnancy-related genitourinary diagnosis.
When is it used?
- May be used when a clinician documents infections of bladder in pregnancy in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
đź©şClinical context
When commonly used
- Parent-code browsing, coding review, and clinical-reference workflows where the goal is to understand the bladder-infection-in-pregnancy family before selecting a trimester-specific child code.
- Documentation review where pregnancy bladder infection is established, but the user is navigating the family overview page rather than a trimester-specific leaf page.
Common workup
- Common related testing on this page includes Urinalysis, Urine culture, Complete blood count.
- Related procedures or service context already linked on this page include Obstetric ultrasound, Fetal nonstress testing.
Common management context
- Overview-level review often includes urinalysis, urine culture, symptom review, and coordination of maternal monitoring alongside pregnancy follow-up.
- The final billable code usually becomes more specific when the chart identifies trimester timing and confirms bladder or lower-tract infection detail.
- Specialist context already linked on this page includes Obstetrician, Gynecologist, Infectious Disease Specialist, Urologist.
🔍Key distinctions
Important notes
- This parent page is an overview for trimester-specific bladder-infection-in-pregnancy codes rather than the most specific billable leaf code.
- Bladder infection remains distinct from renal or upper-tract infection diagnoses inside the pregnancy context.
- This overview page groups trimester-specific bladder-infection-in-pregnancy codes, so the final billable code usually depends on trimester timing and confirmation that the documented infection is bladder or lower urinary rather than renal or another site.
Related codes to consider
O23.10Infections of bladder in pregnancy, unspecified trimester
Related trimester-specific pregnancy bladder-infection ICD-10 code; documentation often becomes more specific when the chart identifies trimester timing, lower-versus-upper urinary involvement, organism detail, or clearer pregnancy context.
O23.11Infections of bladder in pregnancy, first trimester
Related trimester-specific pregnancy bladder-infection ICD-10 code; documentation often becomes more specific when the chart identifies trimester timing, lower-versus-upper urinary involvement, organism detail, or clearer pregnancy context.
O23.12Infections of bladder in pregnancy, second trimester
Related trimester-specific pregnancy bladder-infection ICD-10 code; documentation often becomes more specific when the chart identifies trimester timing, lower-versus-upper urinary involvement, organism detail, or clearer pregnancy context.
O23.13Infections of bladder in pregnancy, third trimester
Related trimester-specific pregnancy bladder-infection ICD-10 code; documentation often becomes more specific when the chart identifies trimester timing, lower-versus-upper urinary involvement, organism detail, or clearer pregnancy context.
Code hierarchy
chapter
15Pregnancy, childbirth and the puerperium (O00-O9A)
block
O20-O29Other maternal disorders predominantly related to pregnancy
category
O23Infections of genitourinary tract in pregnancy
currentO23
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
ObstetricianGynecologistInfectious Disease SpecialistUrologist
Related tests
Urinalysis
Commonly reviewed when evaluating urinary tract infection in pregnancy.
Urine culture
Often used to help identify urinary pathogens in pregnancy-related infection workup.
Complete blood count
May be reviewed as part of broader infection assessment in pregnancy.
Related procedures
Obstetric ultrasound
May appear in pregnancy follow-up pathways when infection is being assessed alongside fetal well-being.
Fetal nonstress testing
May be used in selected higher-risk pregnancy monitoring pathways.
Related codes
Sibling codes
O23.0Infections of kidney in pregnancyO23.2Infections of urethra in pregnancyO23.3Infections of other parts of urinary tract in pregnancyO23.4Unspecified infection of urinary tract in pregnancyO23.5Infections of the genital tract in pregnancyO23.9Unspecified genitourinary tract infection in pregnancy
Mapped diagnoses and classifications
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
O23.1
Replacement codes
O23.10 — Infections of bladder in pregnancy, unspecified trimesterO23.11 — Infections of bladder in pregnancy, first trimesterO23.12 — Infections of bladder in pregnancy, second trimesterO23.13 — Infections of bladder in pregnancy, third trimester
Common synonyms
Infections of bladder in pregnancy
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.