2023

  1. ICD-10-CM Codes
    2. ›
  2. O00-O9A
    3. ›
  3. O20-O29
    4. ›
  4. O23-
    5. ›
  5. 2023 ICD-10-CM Diagnosis Code O23.01

2023 ICD-10-CM Diagnosis Code O23.01

Infections of kidney in pregnancy, first trimester

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx 1st Trimester (< 14 weeks)
  • O23.01 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM O23.01 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of O23.01 - other international versions of ICD-10 O23.01 may differ.
ICD-10-CM Coding Rules
  • O23.01 is applicable to maternity patients aged 12 - 55 years inclusive.
  • O23.01 is applicable to female patients.
  • O23.01 is applicable to mothers in the first trimester of pregnancy, which is defined as less than 14 weeks since the first day of the last menstrual period.
The following code(s) above O23.01 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to O23.01:
  • O00-O9A
    2023 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    Note
    • 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
    Type 1 Excludes
    • supervision of normal pregnancy (Z34.-)
    Type 2 Excludes
    • mental and behavioral disorders associated with the puerperium (F53.-)
    • obstetrical tetanus (A34)
    • postpartum necrosis of pituitary gland (E23.0)
    • puerperal osteomalacia (M83.0)
    Use Additional
    • code from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
    Pregnancy, childbirth and the puerperium
  • O20-O29
    2023 ICD-10-CM Range O20-O29

    Other maternal disorders predominantly related to pregnancy

    Type 2 Excludes
    • maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
    • maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)
    Other maternal disorders predominantly related to pregnancy
  • O23
    ICD-10-CM Diagnosis Code O23

    Infections of genitourinary tract in pregnancy

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • gonococcal infections complicating pregnancy, childbirth and the puerperium (O98.2)
    • infections with a predominantly sexual mode of transmission NOS complicating pregnancy, childbirth and the puerperium (O98.3)
    • syphilis complicating pregnancy, childbirth and the puerperium (O98.1)
    • tuberculosis of genitourinary system complicating pregnancy, childbirth and the puerperium (O98.0)
    • venereal disease NOS complicating pregnancy, childbirth and the puerperium (O98.3)
    Use Additional
    Infections of genitourinary tract in pregnancy
  • O23.0
    ICD-10-CM Diagnosis Code O23.0

    Infections of kidney in pregnancy

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Applicable To
    • Pyelonephritis in pregnancy
    Infections of kidney in pregnancy
ICD-10-CM O23.01 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 817 Other antepartum diagnoses with o.r. Procedures with mcc
  • 818 Other antepartum diagnoses with o.r. Procedures with cc
  • 819 Other antepartum diagnoses with o.r. Procedures without cc/mcc
  • 831 Other antepartum diagnoses without o.r. Procedures with mcc
  • 832 Other antepartum diagnoses without o.r. Procedures with cc
  • 833 Other antepartum diagnoses without o.r. Procedures without cc/mcc

Convert O23.01 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To O23.01
O22.8X3 …… third trimester
O22.8X9 …… unspecified trimester
O22.9 Venous complication in pregnancy, unspecified
O22.90 …… unspecified trimester
O22.91 …… first trimester
O22.92 …… second trimester
O22.93 …… third trimester
O23 Infections of genitourinary tract in pregnancy
O23.0 Infections of kidney in pregnancy
O23.00 …… unspecified trimester
O23.01 …… first trimester
O23.02 …… second trimester
O23.03 …… third trimester
O23.1 Infections of bladder in pregnancy
O23.10 …… unspecified trimester
O23.11 …… first trimester
O23.12 …… second trimester
O23.13 …… third trimester
O23.2 Infections of urethra in pregnancy
O23.20 …… unspecified trimester
O23.21 …… first trimester

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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