ICD-10-CM Codes
O00-O9A
O10-O16
O13-
2023 ICD-10-CM Diagnosis Code O13.9

2023 ICD-10-CM Diagnosis Code O13.9

Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

Maternity Dx (12-55 years)

Female Dx

O13.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Short description: Gestational htn w/o significant proteinuria, unsp trimester
The 2023 edition of ICD-10-CM O13.9 became effective on October 1, 2022.
This is the American ICD-10-CM version of O13.9 - other international versions of ICD-10 O13.9 may differ.

ICD-10-CM Coding Rules

O13.9 is applicable to maternity patients aged 12 - 55 years inclusive.
O13.9 is applicable to female patients.

The following code(s) above O13.9 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 O13.9:

O00-O9A
2023 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
O13
ICD-10-CM Diagnosis Code O13
Gestational [pregnancy-induced] hypertension without significant proteinuria
Includes
- gestational hypertension NOS
- transient hypertension of pregnancy
Gestational [pregnancy-induced] hypertension without significant proteinuria

Approximate Synonyms

Gestational hypertension in pregnancy
Gestational hypertension, after childbirth
Postpartum pregnancy-induced hypertension
Transient hypertension of pregnancy - not delivered

ICD-10-CM O13.9 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

817 Other antepartum diagnoses with o.r. Procedures with mcc
818 Other antepartum diagnoses with o.r. Procedures with cc
819 Other antepartum diagnoses with o.r. Procedures without cc/mcc
831 Other antepartum diagnoses without o.r. Procedures with mcc
832 Other antepartum diagnoses without o.r. Procedures with cc
833 Other antepartum diagnoses without o.r. Procedures without cc/mcc

Convert O13.9 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
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to O13.9:

Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
ICD-10-CM Diagnosis Code I10
Essential (primary) hypertension
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-)
- complicating
  - puerperium, pre-existing O16.5
    ICD-10-CM Diagnosis Code O16.5
    Unspecified maternal hypertension, complicating the puerperium
    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    - pregnancy-induced O13.9

ICD-10-CM Codes Adjacent To O13.9

O12.22 …… second trimester

O12.23 …… third trimester

O12.24 …… complicating childbirth

O12.25 …… complicating the puerperium

O13 Gestational [pregnancy-induced] hypertension without significant proteinuria

O13.1 Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester

O13.2 Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester

O13.3 Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester

O13.4 Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth

O13.5 Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium

O13.9 Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester

O14 Pre-eclampsia

O14.0 Mild to moderate pre-eclampsia

O14.00 …… unspecified trimester

O14.02 …… second trimester

O14.03 …… third trimester

O14.04 …… complicating childbirth

O14.05 …… complicating the puerperium

O14.1 Severe pre-eclampsia

O14.10 …… unspecified trimester

O14.12 …… second trimester

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

2023 ICD-10-CM Diagnosis Code O13.9

Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester

Pregnancy, childbirth and the puerperium

Gestational [pregnancy-induced] hypertension without significant proteinuria

Essential (primary) hypertension

Unspecified maternal hypertension, complicating the puerperium