2019 ICD-10-CM Diagnosis Code O11

Pre-existing hypertension with pre-eclampsia

Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code from
    ICD-10-CM Diagnosis Code O10

    Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    • 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.-)
    to identify the type of hypertension
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • conditions in Ol0 complicated by pre-eclampsia
  • pre-eclampsia superimposed pre-existing hypertension
The following code(s) above O11 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 O11:
  • O00-O9A
    2019 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    • 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
Code History
Code annotations containing back-references to O11:
ICD-10-CM Codes Adjacent To O11
O10.42 Pre-existing secondary hypertension complicating childbirth
O10.43 Pre-existing secondary hypertension complicating the puerperium
O10.9 Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium
O10.91 Unspecified pre-existing hypertension complicating pregnancy
O10.911 …… first trimester
O10.912 …… second trimester
O10.913 …… third trimester
O10.919 …… unspecified trimester
O10.92 Unspecified pre-existing hypertension complicating childbirth
O10.93 Unspecified pre-existing hypertension complicating the puerperium
O11 Pre-existing hypertension with pre-eclampsia
O11.1 Pre-existing hypertension with pre-eclampsia, first trimester
O11.2 Pre-existing hypertension with pre-eclampsia, second trimester
O11.3 Pre-existing hypertension with pre-eclampsia, third trimester
O11.4 Pre-existing hypertension with pre-eclampsia, complicating childbirth
O11.5 Pre-existing hypertension with pre-eclampsia, complicating the puerperium
O11.9 Pre-existing hypertension with pre-eclampsia, unspecified trimester
O12 Gestational [pregnancy-induced] edema and proteinuria without hypertension
O12.0 Gestational edema
O12.00 …… unspecified trimester
O12.01 …… first trimester

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