2020 ICD-10-CM Diagnosis Code O24.9

Unspecified diabetes mellitus in pregnancy, childbirth and the puerperium

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • O24.9 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Unsp diabetes in pregnancy, childbirth and the puerperium
  • The 2020 edition of ICD-10-CM O24.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O24.9 - other international versions of ICD-10 O24.9 may differ.
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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 for long-term (current) use of insulin (
    ICD-10-CM Diagnosis Code Z79.4

    Long term (current) use of insulin

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
The following code(s) above O24.9 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 O24.9:
  • O00-O9A
    2020 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
  • O20-O29
    2020 ICD-10-CM Range O20-O29

    Other maternal disorders predominantly related to pregnancy

    Type 2 Excludes
    • maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
    • maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)
    Other maternal disorders predominantly related to pregnancy
Clinical Information
  • The state of pregnancy in women with diabetes mellitus. This does not include either symptomatic diabetes or glucose intolerance induced by pregnancy (diabetes, gestational) which resolves at the end of pregnancy.
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
ICD-10-CM Codes Adjacent To O24.9
O24.435 Gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs
O24.439 …… unspecified control
O24.8 Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperium
O24.81 Other pre-existing diabetes mellitus in pregnancy
O24.811 …… first trimester
O24.812 …… second trimester
O24.813 …… third trimester
O24.819 …… unspecified trimester
O24.82 Other pre-existing diabetes mellitus in childbirth
O24.83 Other pre-existing diabetes mellitus in the puerperium
O24.9 Unspecified diabetes mellitus in pregnancy, childbirth and the puerperium
O24.91 Unspecified diabetes mellitus in pregnancy
O24.911 …… first trimester
O24.912 …… second trimester
O24.913 …… third trimester
O24.919 …… unspecified trimester
O24.92 Unspecified diabetes mellitus in childbirth
O24.93 Unspecified diabetes mellitus in the puerperium
O25 Malnutrition in pregnancy, childbirth and the puerperium
O25.1 Malnutrition in pregnancy
O25.10 …… unspecified trimester

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