2021 ICD-10-CM Code O10.019

Pre-existing essential hypertension complicating pregnancy, unspecified trimester

Version 2021
Billable Code
Unspecified Code
Maternity Diagnoses
Diagnoses For Females Only
MS-DRG Mapping

Valid for Submission

O10.019 is a billable diagnosis code used to specify a medical diagnosis of pre-existing essential hypertension complicating pregnancy, unspecified trimester. The code O10.019 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code O10.019 might also be used to specify conditions or terms like benign essential hypertension, benign essential hypertension complicating and/or reason for care during pregnancy, benign essential hypertension complicating pregnancy, childbirth and the puerperium, benign essential hypertension complicating pregnancy, childbirth and the puerperium - delivered, benign essential hypertension complicating pregnancy, childbirth and the puerperium - not delivered , benign essential hypertension complicating pregnancy, childbirth and the puerperium with postnatal complication, etc.

The code O10.019 is applicable to female patients aged 12 through 55 years inclusive. It is clinically and virtually impossible to use this code on a non-female patient outside the stated age range.

Unspecified diagnosis codes like O10.019 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

ICD-10:O10.019
Short Description:Pre-existing essential htn comp pregnancy, unsp trimester
Long Description:Pre-existing essential hypertension complicating pregnancy, unspecified trimester

Code Classification

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert O10.019 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code O10.019 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


High Blood Pressure in Pregnancy

What is high blood pressure in pregnancy?

Blood pressure is the force of your blood pushing against the walls of your arteries as your heart pumps blood. High blood pressure, or hypertension, is when this force against your artery walls is too high. There are different types of high blood pressure in pregnancy:

What causes preeclampsia?

The cause of preeclampsia is not known.

Who is at risk for preeclampsia?

You are at higher risk of preeclampsia if you

What problems can preeclampsia cause?

Preeclampsia can cause

What are the symptoms of preeclampsia?

Possible symptoms of preeclampsia include


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)