ICD-10 Code O23.91

Unspecified genitourinary tract infection in pregnancy, first trimester

Version 2019 Billable Code Maternity Diagnoses Diagnoses For Females Only First Trimester (0 to 13 Weeks)
ICD-10:O23.91
Short Description:Unsp GU tract infection in pregnancy, first trimester
Long Description:Unspecified genitourinary tract infection in pregnancy, first trimester

Valid for Submission

ICD-10 O23.91 is a billable code used to specify a medical diagnosis of unspecified genitourinary tract infection in pregnancy, first trimester. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

  • Pregnancy, childbirth and the puerperium (O00–O99)
    • Other maternal disorders predominantly related to pregnancy (O20-O29)
      • Infections of genitourinary tract in pregnancy (O23)

Information for Medical Professionals

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

  • Maternity diagnoses - Maternity. Age range is 12–55 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).
  • Diagnoses for females only - Diagnoses for females only.

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code O23.91 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC

Convert O23.91 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 646.61 - Gu infection-delivered (Approximate Flag)
  • 646.62 - Gu infection-deliv w p/p (Approximate Flag)
  • 646.63 - Gu infection-antepartum (Approximate Flag)

Information for Patients


Infections and Pregnancy

During pregnancy, some common infections like the common cold or a skin infection do not usually cause serious problems. But other infections can be dangerous to you, your baby, or both. Some infections may lead to preterm birth and low birth weight babies. Others can cause serious illness, birth defects, and lifelong disabilities, such as hearing loss or learning problems.

Some of the infections that can be dangerous during pregnancy include

  • Bacterial vaginosis (BV)
  • Group B strep (GBS)
  • Hepatitis
  • Sexually transmitted diseases
  • Toxoplasmosis
  • Urinary tract infections
  • Yeast infections
  • Zika virus

To try to prevent infections,

  • Don't eat raw or undercooked meat
  • Don't share food or drinks with other people
  • Wash your hands frequently
  • Don't empty cat litter. Cats can transmit toxoplasmosis.

If you do get an infection during pregnancy, contact your health care provider about how best to protect you and your baby. Only some medicines are safe during pregnancy.

  • Group B streptococcal septicemia of the newborn (Medical Encyclopedia)
  • Group B streptococcus - pregnancy (Medical Encyclopedia)
  • Immunization and Pregnancy (Centers for Disease Control and Prevention)
  • Pregnancy and the flu (Medical Encyclopedia)
  • Pregnant Women Need a Flu Shot (Centers for Disease Control and Prevention)
  • Protect Your Baby for Life: When a Pregnant Woman Has Hepatitis B (Centers for Disease Control and Prevention)
  • Toxoplasmosis: An Important Message for Women (Centers for Disease Control and Prevention)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.