2020 ICD-10-CM Diagnosis Code O28

Abnormal findings on antenatal screening of mother

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • O28 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 O28 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O28 - other international versions of ICD-10 O28 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as O28. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • diagnostic findings classified elsewhere - see Alphabetical Index
The following code(s) above O28 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 O28:
  • 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
  • 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 O28:
  • Type 2 Excludes: Z36
    ICD-10-CM Diagnosis Code Z36

    Encounter for antenatal screening of mother

      2016 2017 2018 - Converted to Parent Code 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • Encounter for placental sample (taken vaginally)
    • Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.
    Type 1 Excludes
    • diagnostic examination- code to sign or symptom
    • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
    • suspected fetal condition affecting management of pregnancy - code to condition in Chapter 15
    Type 2 Excludes
    • abnormal findings on antenatal screening of mother (O28.-)
    • genetic counseling and testing (Z31.43-, Z31.5)
    • routine prenatal care (Z34)
ICD-10-CM Codes Adjacent To O28
O26.89 Other specified pregnancy related conditions
O26.891 …… first trimester
O26.892 …… second trimester
O26.893 …… third trimester
O26.899 …… unspecified trimester
O26.9 Pregnancy related conditions, unspecified
O26.90 …… unspecified trimester
O26.91 …… first trimester
O26.92 …… second trimester
O26.93 …… third trimester
O28 Abnormal findings on antenatal screening of mother
O28.0 Abnormal hematological finding on antenatal screening of mother
O28.1 Abnormal biochemical finding on antenatal screening of mother
O28.2 Abnormal cytological finding on antenatal screening of mother
O28.3 Abnormal ultrasonic finding on antenatal screening of mother
O28.4 Abnormal radiological finding on antenatal screening of mother
O28.5 Abnormal chromosomal and genetic finding on antenatal screening of mother
O28.8 Other abnormal findings on antenatal screening of mother
O28.9 Unspecified abnormal findings on antenatal screening of mother
O29 Complications of anesthesia during pregnancy
O29.0 Pulmonary complications of anesthesia during pregnancy

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