2021 ICD-10-CM Diagnosis Code O40.2

Polyhydramnios, second trimester

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code 2nd Trimester (14-28 weeks)
  • O40.2 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM O40.2 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O40.2 - other international versions of ICD-10 O40.2 may differ.
ICD-10-CM Coding Rules
  • O40.2 is applicable to mothers in the second trimester of pregnancy, which is defined as between equal to or greater than 14 weeks to less than 28 weeks since the first day of the last menstrual period.
The following code(s) above O40.2 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 O40.2:
  • O00-O9A
    2021 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
  • O40
    ICD-10-CM Diagnosis Code O40

    Polyhydramnios

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Includes
    • hydramnios
    Type 1 Excludes
    • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
    Polyhydramnios
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
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To O40.2
O36.93X9 …… other fetus
O40 Polyhydramnios
O40.1 Polyhydramnios, first trimester
O40.1XX0 …… not applicable or unspecified
O40.1XX1 …… fetus 1
O40.1XX2 …… fetus 2
O40.1XX3 …… fetus 3
O40.1XX4 …… fetus 4
O40.1XX5 …… fetus 5
O40.1XX9 …… other fetus
O40.2 Polyhydramnios, second trimester
O40.2XX0 …… not applicable or unspecified
O40.2XX1 …… fetus 1
O40.2XX2 …… fetus 2
O40.2XX3 …… fetus 3
O40.2XX4 …… fetus 4
O40.2XX5 …… fetus 5
O40.2XX9 …… other fetus
O40.3 Polyhydramnios, third trimester
O40.3XX0 …… not applicable or unspecified
O40.3XX1 …… fetus 1

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