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ICD-10 Coding for Elevated Blood Pressure in Pregnancy(O13.9, O10.0)

Complete ICD-10-CM coding and documentation guide for Elevated Blood Pressure in Pregnancy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Gestational HypertensionPregnancy-Induced HypertensionTransient Hypertension of Pregnancy

Related ICD-10 Code Ranges

Complete code families applicable to Elevated Blood Pressure in Pregnancy

O10-O16Primary Range

Hypertensive disorders in pregnancy, childbirth, and the puerperium

This range includes all hypertensive conditions related to pregnancy, including gestational hypertension and pre-existing hypertension.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
O13.9Gestational hypertension without significant proteinuria, unspecified trimesterUse when a pregnant patient develops hypertension after 20 weeks without proteinuria.
  • BP ≥140/90 mmHg after 20 weeks of gestation
  • No significant proteinuria (urine protein <300mg/24hr)
O10.0Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperiumUse for patients with a history of hypertension prior to pregnancy.
  • Hypertension diagnosed before pregnancy or before 20 weeks of gestation

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for elevated blood pressure in pregnancy

Essential facts and insights about Elevated Blood Pressure in Pregnancy

The ICD-10 code for gestational hypertension without significant proteinuria is O13.9, used for hypertension after 20 weeks without proteinuria.

Primary ICD-10-CM Codes for elevated blood pressure in pregnancy

Gestational hypertension without significant proteinuria, unspecified trimester
Billable Code

Decision Criteria

clinical Criteria

  • BP readings ≥140/90 mmHg on two occasions at least 4 hours apart after 20 weeks.

documentation Criteria

  • Document absence of proteinuria and specify gestational age.

Applicable To

  • Gestational hypertension
  • Pregnancy-induced hypertension

Excludes

  • Pre-eclampsia (O14.-)
  • Chronic hypertension (O10.-)

Clinical Validation Requirements

  • BP ≥140/90 mmHg after 20 weeks of gestation
  • No significant proteinuria (urine protein <300mg/24hr)

Code-Specific Risks

  • Misclassification if proteinuria is present
  • Incorrect trimester documentation

Coding Notes

  • Ensure accurate documentation of BP readings and absence of proteinuria.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

20 weeks gestation of pregnancy

Z3A.20
Use to specify the exact weeks of gestation.

Essential (primary) hypertension

I10
Use to specify the type of hypertension.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Pre-eclampsia

O14.0
Presence of proteinuria ≥300mg/24hr or other signs of organ dysfunction.

Gestational hypertension

O13.9
Hypertension onset after 20 weeks without prior history.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Elevated Blood Pressure in Pregnancy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code O13.9.

Impact

Clinical: Inaccurate clinical assessment, Regulatory: Non-compliance with coding standards, Financial: Potential claim denials

Mitigation Strategy

Always include Z3A code for gestational age, Verify documentation completeness

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation Strategy

Use O14.- for pre-eclampsia if proteinuria ≥300mg/24hr is present.

Impact

Using O13.9 without proper documentation of BP and proteinuria.

Mitigation Strategy

Implement regular training on documentation standards.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Elevated Blood Pressure in Pregnancy, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Elevated Blood Pressure in Pregnancy

Use these documentation templates to ensure complete and accurate documentation for Elevated Blood Pressure in Pregnancy. These templates include all required elements for proper coding and billing.

Gestational Hypertension Documentation

Specialty: Obstetrics

Required Elements

  • BP readings
  • Proteinuria test results
  • Gestational age
  • Symptoms

Example Documentation

Patient at 28 weeks with BP 145/92, no proteinuria, diagnosed with gestational hypertension.

Examples: Poor vs. Good Documentation

Poor Documentation Example
High BP noted, monitor.
Good Documentation Example
Gestational hypertension at 28 weeks: BP 145/92, no proteinuria. Plan: Monitor BP weekly.
Explanation
The good example provides specific BP readings, gestational age, and a management plan.

Need help with ICD-10 coding for Elevated Blood Pressure in Pregnancy? Ask your questions below.

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