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ICD-10-CM Codes
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O00-O9A
Pregnancy, childbirth and the puerperium
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O10-O16
Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
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O10-
Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
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2021 ICD-10-CM Diagnosis Code O10.01
2021 ICD-10-CM Diagnosis Code O10.01
Pre-existing essential hypertension complicating pregnancy,
2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
- O10.01 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- The 2021 edition of ICD-10-CM O10.01 became effective on October 1, 2020.
- This is the American ICD-10-CM version of O10.01 - other international versions of ICD-10 O10.01 may differ.
The following code(s) above
O10.01 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
O10.01:
- O00-O9A
2021 ICD-10-CM Range O00-O9A
Pregnancy, childbirth and the puerperiumNote- 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 - O10
ICD-10-CM Diagnosis Code O10
Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
Includes- pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium
Type 2 Excludes- pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)
Pre-existing hypertension complicating pregnancy, childbirth and the puerperium - O10.0
ICD-10-CM Diagnosis Code O10.0
Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium
2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
Applicable To- Any condition in I10 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
Pre-existing essential hypertension 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
- Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
ICD-10-CM Diagnosis Code I10
Essential (primary) hypertension
2016 2017 2018 2019 2020 2021 Billable/Specific Code Questionable As Admission Dx
Includes- high blood pressure
- hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
Type 1 Excludes- hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Type 2 Excludes- essential (primary) hypertension involving vessels of brain (I60-I69)
- essential (primary) hypertension involving vessels of eye (H35.0-)
ICD-10-CM Codes Adjacent To O10.01
O09.9 Supervision of high risk pregnancy, unspecified
O09.90 …… unspecified 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,
O10.02 Pre-existing essential hypertension complicating childbirth
O10.03 Pre-existing essential hypertension complicating the puerperium
O10.1 Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium
O10.11 Pre-existing hypertensive heart disease complicating pregnancy
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.