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 O10.0

2021 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
  • O10.0 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Pre-existing essential hypertension compl preg/chldbrth
  • The 2021 edition of ICD-10-CM O10.0 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O10.0 - other international versions of ICD-10 O10.0 may differ.
Applicable To
  • Any condition in
    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-)
    I10
    specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
The following code(s) above O10.0 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 O10.0:
  • 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
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
ICD-10-CM Codes Adjacent To O10.0
O09.891 …… first trimester
O09.892 …… second trimester
O09.893 …… third trimester
O09.899 …… unspecified trimester
O09.9 Supervision of high risk pregnancy, unspecified
O09.90 …… unspecified trimester
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

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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