2020 ICD-10-CM Diagnosis Code O26.0

Excessive weight gain in pregnancy

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • O26.0 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM O26.0 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O26.0 - other international versions of ICD-10 O26.0 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (O26.0) and the excluded code together.
  • gestational edema (
    ICD-10-CM Diagnosis Code O12.0

    Gestational edema

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    ICD-10-CM Diagnosis Code O12.2

    Gestational edema with proteinuria

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
The following code(s) above O26.0 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 O26.0:
  • 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
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
Code annotations containing back-references to O26.0:
  • Type 1 Excludes: R63.5
    ICD-10-CM Diagnosis Code R63.5

    Abnormal weight gain

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • excessive weight gain in pregnancy (O26.0-)
    • obesity (E66.-)

Diagnosis Index entries containing back-references to O26.0:
  • Pregnancy (single) (uterine) - see also Delivery and Puerperal
    • complicated by (care of) (management affected by)
      • excessive weight gain O26.0-

ICD-10-CM Codes Adjacent To O26.0
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
O25.11 …… first trimester
O25.12 …… second trimester
O25.13 …… third trimester
O25.2 Malnutrition in childbirth
O25.3 Malnutrition in the puerperium
O26 Maternal care for other conditions predominantly related to pregnancy
O26.0 Excessive weight gain in pregnancy
O26.00 …… unspecified trimester
O26.01 …… first trimester
O26.02 …… second trimester
O26.03 …… third trimester
O26.1 Low weight gain in pregnancy
O26.10 …… unspecified trimester
O26.11 …… first trimester
O26.12 …… second trimester
O26.13 …… third trimester
O26.2 Pregnancy care for patient with recurrent pregnancy loss

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