2020 ICD-10-CM Diagnosis Code O34.21

Maternal care for scar from previous cesarean delivery

    2016 2017 - Converted to Parent Code 2018 2019 2020 Non-Billable/Non-Specific Code
  • O34.21 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 O34.21 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O34.21 - other international versions of ICD-10 O34.21 may differ.
The following code(s) above O34.21 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 O34.21:
  • 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
  • O34
    ICD-10-CM Diagnosis Code O34

    Maternal care for abnormality of pelvic organs

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code First
    • any associated obstructed labor (O65.5)
    Includes
    • the listed conditions as a reason for hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor
    Use Additional
    • code for specific condition
    Maternal care for abnormality of pelvic organs
Approximate Synonyms
  • History of cesarean section
  • Previous cesarean delivery - delivered
  • Previous cesarean section
  • Previous cesarean section, delivered
  • Supervision high risk pregnancy
  • Supervision of high risk pregnancy for history of cesarean section done
  • Supervision of high risk pregnancy with history of previous cesarean section done
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): Deleted code
  • 2017 (effective 10/1/2016): New code
  • 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 O34.21:
  • Code First: O75.82
    ICD-10-CM Diagnosis Code O75.82

    Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section

      2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Delivery by (planned) cesarean section occurring after 37 completed weeks of gestation but before 39 completed weeks gestation due to (spontaneous) onset of labor
    Code First
    • to specify reason for planned cesarean section such as:
    • cephalopelvic disproportion (normally formed fetus) (O33.9)
    • previous cesarean delivery (O34.21)
ICD-10-CM Codes Adjacent To O34.21
O34.00 Maternal care for unspecified congenital malformation of uterus, unspecified trimester
O34.01 Maternal care for unspecified congenital malformation of uterus, first trimester
O34.02 Maternal care for unspecified congenital malformation of uterus, second trimester
O34.03 Maternal care for unspecified congenital malformation of uterus, third trimester
O34.1 Maternal care for benign tumor of corpus uteri
O34.10 …… unspecified trimester
O34.11 …… first trimester
O34.12 …… second trimester
O34.13 …… third trimester
O34.2 Maternal care due to uterine scar from previous surgery
O34.21 Maternal care for scar from previous cesarean delivery
O34.211 Maternal care for low transverse scar from previous cesarean delivery
O34.212 Maternal care for vertical scar from previous cesarean delivery
O34.219 Maternal care for unspecified type scar from previous cesarean delivery
O34.29 Maternal care due to uterine scar from other previous surgery
O34.3 Maternal care for cervical incompetence
O34.30 …… unspecified trimester
O34.31 …… first trimester
O34.32 …… second trimester
O34.33 …… third trimester
O34.4 Maternal care for other abnormalities of cervix

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