2023 ICD-10-CM Diagnosis Code O09.A0

Supervision of pregnancy with history of molar pregnancy, unspecified trimester

    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx POA Exempt
  • O09.A0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Suprvsn of preg with history of molar preg, unsp trimester
  • The 2023 edition of ICD-10-CM O09.A0 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of O09.A0 - other international versions of ICD-10 O09.A0 may differ.
ICD-10-CM Coding Rules
  • O09.A0 is applicable to maternity patients aged 12 - 55 years inclusive.
  • O09.A0 is applicable to female patients.
The following code(s) above O09.A0 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 O09.A0:
  • O00-O9A
    2023 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
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • O09.A0 is considered exempt from POA reporting.
ICD-10-CM O09.A0 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 998 Principal diagnosis invalid as discharge diagnosis

Convert O09.A0 to ICD-9-CM

Code History
  • 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
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To O09.A0
O09.00 …… unspecified trimester
O09.01 …… first trimester
O09.02 …… second trimester
O09.03 …… third trimester
O09.1 Supervision of pregnancy with history of ectopic pregnancy
O09.10 …… unspecified trimester
O09.11 …… first trimester
O09.12 …… second trimester
O09.13 …… third trimester
O09.A Supervision of pregnancy with history of molar pregnancy
O09.A0 …… unspecified trimester
O09.A1 …… first trimester
O09.A2 …… second trimester
O09.A3 …… third trimester
O09.2 Supervision of pregnancy with other poor reproductive or obstetric history
O09.21 Supervision of pregnancy with history of pre-term labor
O09.211 …… first trimester
O09.212 …… second trimester
O09.213 …… third trimester
O09.219 …… unspecified trimester
O09.29 Supervision of pregnancy with other poor reproductive or obstetric history

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