ICD-10 Coding for Chronic Hypertension in Pregnancy(O10.0, O11)
Complete ICD-10-CM coding and documentation guide for Chronic Hypertension in Pregnancy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Chronic Hypertension in Pregnancy
O10-O11Primary Range
Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
This range includes codes for chronic hypertension and its complications during pregnancy.
Hypertensive diseases
These codes are used for hypertensive diseases that may require additional coding when complicating pregnancy.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| O10.0 | Pre-existing essential hypertension complicating pregnancy | Use when essential hypertension is diagnosed before pregnancy and complicates the current pregnancy. |
|
| O11 | Pre-existing hypertension with superimposed preeclampsia | Use when a patient with chronic hypertension develops preeclampsia during pregnancy. |
|
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 chronic hypertension in pregnancy
Essential facts and insights about Chronic Hypertension in Pregnancy
Primary ICD-10-CM Codes for chronic hypertension in pregnancy
Decision Criteria
clinical Criteria
- Blood pressure readings before 20 weeks
documentation Criteria
- Explicit mention of pre-existing hypertension
Applicable To
- Essential hypertension diagnosed prior to pregnancy
Clinical Validation Requirements
- Blood pressure ≥140/90 mmHg documented before 20 weeks of gestation
- Pre-pregnancy medical records confirming hypertension
Code-Specific Risks
- Misclassification with gestational hypertension
- Omission of trimester-specific codes
Coding Notes
- Ensure documentation specifies the hypertension as pre-existing and complicating the pregnancy.
O11 - Pre-existing hypertension with superimposed preeclampsia
Use when a patient with chronic hypertension develops preeclampsia during pregnancy.
Applicable To
- Chronic hypertension with new onset proteinuria
Excludes
- Gestational hypertension with preeclampsia (O13.- with O14.-)
Clinical Validation Requirements
- New proteinuria ≥300 mg/24h in a patient with chronic hypertension
- Clinical signs of preeclampsia such as elevated liver enzymes or thrombocytopenia
Coding Notes
Ensure proteinuria and other preeclampsia symptoms are documented.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Differential Codes
Alternative codes to consider when ruling out similar conditions to the primary diagnosis.
Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Chronic Hypertension in Pregnancy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code O10.0.
Impact
Clinical: Inaccurate assessment of pregnancy complications., Regulatory: Non-compliance with coding standards., Financial: Potential loss of reimbursement for trimester-specific codes.
Mitigation Strategy
Always document gestational age with each visit., Use standardized templates for OB visits.
Impact
Reimbursement: Incorrect DRG assignment leading to potential underpayment., Compliance: Non-compliance with ICD-10 coding guidelines., Data Quality: Inaccurate clinical data affecting patient care.
Mitigation Strategy
Verify the timing of hypertension onset relative to pregnancy.
Impact
Using O13 instead of O10 for pre-existing hypertension.
Mitigation Strategy
Educate coders on the importance of timing in hypertension diagnosis.
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 Chronic Hypertension in Pregnancy, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Chronic Hypertension in Pregnancy
Use these documentation templates to ensure complete and accurate documentation for Chronic Hypertension in Pregnancy. These templates include all required elements for proper coding and billing.
Chronic hypertension with superimposed preeclampsia
Specialty: ObstetricsRequired Elements
- Pre-existing hypertension diagnosis
- Gestational age
- Proteinuria levels
- Blood pressure readings
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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