2020 ICD-10-CM Diagnosis Code O13.9

Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester

    2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
  • O13.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Gestational htn w/o significant proteinuria, unsp trimester
  • The 2020 edition of ICD-10-CM O13.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O13.9 - other international versions of ICD-10 O13.9 may differ.
ICD-10-CM Coding Rules
  • O13.9 is applicable to maternity patients aged 12 - 55 years inclusive.
The following code(s) above O13.9 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 O13.9:
  • O00-O9A
    2020 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
  • O13
    ICD-10-CM Diagnosis Code O13

    Gestational [pregnancy-induced] hypertension without significant proteinuria

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • gestational hypertension NOS
    • transient hypertension of pregnancy
    Gestational [pregnancy-induced] hypertension without significant proteinuria
Approximate Synonyms
  • Gestational hypertension in pregnancy
  • Gestational hypertension, after childbirth
  • Postpartum pregnancy-induced hypertension
  • Transient hypertension of pregnancy - not delivered
ICD-10-CM O13.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 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
  • 831 Other antepartum diagnoses without o.r. Procedure with mcc
  • 832 Other antepartum diagnoses without o.r. Procedure with cc
  • 833 Other antepartum diagnoses without o.r. Procedure without cc/mcc

Convert O13.9 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

Diagnosis Index entries containing back-references to O13.9:
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
    ICD-10-CM Diagnosis Code I10

    Essential (primary) hypertension

      2016 2017 2018 2019 2020 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
      • puerperium, pre-existing O16.5
        ICD-10-CM Diagnosis Code O16.5

        Unspecified maternal hypertension, complicating the puerperium

          2017 - New Code 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
        • pregnancy-induced O13.9

ICD-10-CM Codes Adjacent To O13.9
O12.22 …… second trimester
O12.23 …… third trimester
O12.24 …… complicating childbirth
O12.25 …… complicating the puerperium
O13 Gestational [pregnancy-induced] hypertension without significant proteinuria
O13.1 Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester
O13.2 Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester
O13.3 Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester
O13.4 Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
O13.5 Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium
O13.9 Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester
O14 Pre-eclampsia
O14.0 Mild to moderate pre-eclampsia
O14.00 …… unspecified trimester
O14.02 …… second trimester
O14.03 …… third trimester
O14.04 …… complicating childbirth
O14.05 …… complicating the puerperium
O14.1 Severe pre-eclampsia
O14.10 …… unspecified trimester
O14.12 …… second trimester

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