2021 ICD-10-CM Diagnosis Code O9A.21

Injury, poisoning and certain other consequences of external causes complicating pregnancy

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • O9A.21 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Inj/poisn/oth conseq of external causes comp pregnancy
  • The 2021 edition of ICD-10-CM O9A.21 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O9A.21 - other international versions of ICD-10 O9A.21 may differ.
The following code(s) above O9A.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 O9A.21:
  • 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
  • O9A.2
    ICD-10-CM Diagnosis Code O9A.2

    Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    Type 2 Excludes
    • physical, sexual and psychological abuse complicating pregnancy, childbirth and the puerperium (O9A.3-, O9A.4-, O9A.5-)
    Use Additional
    • code(s) to identify the injury or poisoning
    Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium
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

Diagnosis Index entries containing back-references to O9A.21:
  • Pregnancy (single) (uterine) Z33.1
    - see also Delivery and Puerperal
    ICD-10-CM Diagnosis Code Z33.1

    Pregnant state, incidental

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Pregnancy NOS
    • Pregnant state NOS
    Type 1 Excludes
    • complications of pregnancy (O00-O9A)
    • pregnant state, gestational carrier (Z33.3)
    • complicated by (care of) (management affected by)
      • injury or poisoning (conditions in S00-T88) O9A.21-
      • overdose, drug O9A.21- - see also Table of Drugs and Chemicals, by drug, poisoning
      • poisoning O9A.21- - see also Table of Drugs and Chemicals

ICD-10-CM Codes Adjacent To O9A.21
O9A Maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
O9A.1 Malignant neoplasm complicating pregnancy, childbirth and the puerperium
O9A.11 Malignant neoplasm complicating pregnancy
O9A.111 …… first trimester
O9A.112 …… second trimester
O9A.113 …… third trimester
O9A.119 …… unspecified trimester
O9A.12 Malignant neoplasm complicating childbirth
O9A.13 Malignant neoplasm complicating the puerperium
O9A.2 Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium
O9A.21 Injury, poisoning and certain other consequences of external causes complicating pregnancy
O9A.211 …… first trimester
O9A.212 …… second trimester
O9A.213 …… third trimester
O9A.219 …… unspecified trimester
O9A.22 Injury, poisoning and certain other consequences of external causes complicating childbirth
O9A.23 Injury, poisoning and certain other consequences of external causes complicating the puerperium
O9A.3 Physical abuse complicating pregnancy, childbirth and the puerperium
O9A.31 Physical abuse complicating pregnancy
O9A.311 …… first trimester
O9A.312 …… second trimester

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