2021

  1. ICD-10-CM Codes
    2. ›
  2. O00-O9A Pregnancy, childbirth and the puerperium
    3. ›
  3. O10-O16 Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
    4. ›
  4. O10- Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code O10.02

2021 ICD-10-CM Diagnosis Code O10.02

Pre-existing essential hypertension complicating childbirth

    2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
  • O10.02 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM O10.02 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O10.02 - other international versions of ICD-10 O10.02 may differ.
ICD-10-CM Coding Rules
  • O10.02 is applicable to maternity patients aged 12 - 55 years inclusive.
The following code(s) above O10.02 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 O10.02:
  • O00-O9A
    2021 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
  • O10
    ICD-10-CM Diagnosis Code O10

    Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Includes
    • pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium
    Type 2 Excludes
    • pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)
    Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
  • O10.0
    ICD-10-CM Diagnosis Code O10.0

    Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Any condition in I10 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
    Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium
Approximate Synonyms
  • Essential hypertension complicating and/or reason for care during childbirth
  • Essential hypertension complicating and/or reason for care during puerperium
  • Preexisting essential hypertension in childbirth
ICD-10-CM O10.02 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 998 Principal diagnosis invalid as discharge diagnosis

Convert O10.02 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

Diagnosis Index entries containing back-references to O10.02:
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
    ICD-10-CM Diagnosis Code I10

    Essential (primary) hypertension

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Questionable As Admission Dx
    Includes
    • high blood pressure
    • hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
    Type 1 Excludes
    • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
    Type 2 Excludes
    • essential (primary) hypertension involving vessels of brain (I60-I69)
    • essential (primary) hypertension involving vessels of eye (H35.0-)
    • complicating
      • childbirth (labor) O16.4
        ICD-10-CM Diagnosis Code O16.4

        Unspecified maternal hypertension, complicating childbirth

          2017 - New Code 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
        • pre-existing O10.92
          ICD-10-CM Diagnosis Code O10.92

          Unspecified pre-existing hypertension complicating childbirth

            2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
          • essential O10.02

ICD-10-CM Codes Adjacent To O10.02
O09.91 …… first trimester
O09.92 …… second trimester
O09.93 …… third trimester
O10 Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
O10.0 Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium
O10.01 Pre-existing essential hypertension complicating pregnancy,
O10.011 …… first trimester
O10.012 …… second trimester
O10.013 …… third trimester
O10.019 …… unspecified trimester
O10.02 Pre-existing essential hypertension complicating childbirth
O10.03 Pre-existing essential hypertension complicating the puerperium
O10.1 Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium
O10.11 Pre-existing hypertensive heart disease complicating pregnancy
O10.111 …… first trimester
O10.112 …… second trimester
O10.113 …… third trimester
O10.119 …… unspecified trimester
O10.12 Pre-existing hypertensive heart disease complicating childbirth
O10.13 Pre-existing hypertensive heart disease complicating the puerperium
O10.2 Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperium

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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