2020 ICD-10-CM Diagnosis Code O09.91

Supervision of high risk pregnancy, unspecified, first trimester

    2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years) 1st Trimester (< 14 weeks) POA Exempt
  • O09.91 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Supervision of high risk pregnancy, unsp, first trimester
  • The 2020 edition of ICD-10-CM O09.91 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O09.91 - other international versions of ICD-10 O09.91 may differ.
ICD-10-CM Coding Rules
  • O09.91 is applicable to maternity patients aged 12 - 55 years inclusive.
  • O09.91 is applicable to mothers in the first trimester of pregnancy, which is defined as less than 14 weeks since the first day of the last menstrual period.
The following code(s) above O09.91 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 O09.91:
  • 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
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.
  • O09.91 is considered exempt from POA reporting.
ICD-10-CM O09.91 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 998 Principal diagnosis invalid as discharge diagnosis

Convert O09.91 to ICD-9-CM

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
ICD-10-CM Codes Adjacent To O09.91
O09.822 …… second trimester
O09.823 …… third trimester
O09.829 …… unspecified trimester
O09.89 Supervision of other high risk pregnancies
O09.891 …… first trimester
O09.892 …… second trimester
O09.893 …… third trimester
O09.899 …… unspecified trimester
O09.9 Supervision of high risk pregnancy, unspecified
O09.90 …… unspecified trimester
O09.91 …… first trimester
O09.92 …… second trimester
O09.93 …… third trimester
O10 Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
O10.0 Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium
O10.01 Pre-existing essential hypertension complicating pregnancy,
O10.011 …… first trimester
O10.012 …… second trimester
O10.013 …… third trimester
O10.019 …… unspecified trimester
O10.02 Pre-existing essential hypertension complicating childbirth

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