2020 ICD-10-CM Diagnosis Code O99.42

Diseases of the circulatory system complicating childbirth

    2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
  • O99.42 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM O99.42 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O99.42 - other international versions of ICD-10 O99.42 may differ.
ICD-10-CM Coding Rules
  • O99.42 is applicable to maternity patients aged 12 - 55 years inclusive.
The following code(s) above O99.42 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 O99.42:
  • 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
  • O99
    ICD-10-CM Diagnosis Code O99

    Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care
    Type 2 Excludes
    • when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)
    Use Additional
    • code to identify specific condition
    Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
  • O99.4
    ICD-10-CM Diagnosis Code O99.4

    Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    Type 1 Excludes
    • peripartum cardiomyopathy (O90.3)
    Type 2 Excludes
    • hypertensive disorders (O10-O16)
    • obstetric embolism (O88.-)
    • venous complications and cerebrovenous sinus thrombosis in labor, childbirth and the puerperium (O87.-)
    • venous complications and cerebrovenous sinus thrombosis in pregnancy (O22.-)
    Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium
Approximate Synonyms
  • Aortic valve disorder in childbirth
  • Cardiac arrhythmia in childbirth
  • Cardiac arrythmia complicating childbirth
  • Cardiac arrythmia in childbirth
  • Heart disease in childbirth
  • Mitral valve disorder in childbirth
ICD-10-CM O99.42 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 998 Principal diagnosis invalid as discharge diagnosis

Convert O99.42 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 O99.42:
  • Delivery (childbirth) (labor)
    • complicated O75.9
      ICD-10-CM Diagnosis Code O75.9

      Complication of labor and delivery, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
      • by
        • circulatory system disorder O99.42

ICD-10-CM Codes Adjacent To O99.42
O99.352 Diseases of the nervous system complicating pregnancy, second trimester
O99.353 Diseases of the nervous system complicating pregnancy, third trimester
O99.354 Diseases of the nervous system complicating childbirth
O99.355 Diseases of the nervous system complicating the puerperium
O99.4 Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium
O99.41 Diseases of the circulatory system complicating pregnancy
O99.411 …… first trimester
O99.412 …… second trimester
O99.413 …… third trimester
O99.419 …… unspecified trimester
O99.42 Diseases of the circulatory system complicating childbirth
O99.43 Diseases of the circulatory system complicating the puerperium
O99.5 Diseases of the respiratory system complicating pregnancy, childbirth and the puerperium
O99.51 Diseases of the respiratory system complicating pregnancy
O99.511 …… first trimester
O99.512 …… second trimester
O99.513 …… third trimester
O99.519 …… unspecified trimester
O99.52 Diseases of the respiratory system complicating childbirth
O99.53 Diseases of the respiratory system complicating the puerperium
O99.6 Diseases of the digestive system 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.