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ICD-10 Guide
ICD-10 CodesI27.29

I27.29

Billable

Other secondary pulmonary hypertension

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 I27.29 is a billable code used to indicate a diagnosis of other secondary pulmonary hypertension.

Key Diagnostic Point:

I27.29 refers to 'Other secondary pulmonary hypertension,' a condition characterized by elevated blood pressure in the pulmonary arteries due to various underlying causes. This form of pulmonary hypertension can arise from chronic lung diseases, left heart diseases, or conditions affecting the pulmonary vasculature. Clinically, patients may present with symptoms such as dyspnea on exertion, fatigue, chest pain, and syncope. The anatomy involved primarily includes the pulmonary arteries and the right side of the heart, which must work harder to pump blood through the narrowed vessels. Disease progression can lead to right heart failure if left untreated, as the right ventricle becomes hypertrophied and eventually fails due to the increased workload. Diagnostic considerations include echocardiography, right heart catheterization, and imaging studies to identify the underlying cause of the hypertension. Accurate diagnosis is crucial for effective management and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity
  • Treatment complexity
  • Documentation requirements
  • Coding specificity

Audit Risk Factors

  • Common coding errors include misclassification of primary vs. secondary pulmonary hypertension.
  • Documentation gaps often arise from insufficient detail on the underlying conditions leading to pulmonary hypertension.
  • Billing challenges may occur if the underlying cause is not clearly documented, leading to potential denials.

Specialty Focus

Medical Specialties

Cardiology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Pulmonology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical significance of I27.29 lies in its potential to lead to severe complications, including right heart failure and decreased quality of life. Population health impact is notable, as secondary pulmonary hypertension can arise from prevalent conditions such as COPD and heart disease, affecting a significant portion of the population. Quality measures focus on early diagnosis and management to improve patient outcomes, while healthcare utilization patterns may reflect increased hospitalizations and healthcare costs associated with advanced disease stages.

ICD-9 vs ICD-10

The clinical significance of I27.29 lies in its potential to lead to severe complications, including right heart failure and decreased quality of life. Population health impact is notable, as secondary pulmonary hypertension can arise from prevalent conditions such as COPD and heart disease, affecting a significant portion of the population. Quality measures focus on early diagnosis and management to improve patient outcomes, while healthcare utilization patterns may reflect increased hospitalizations and healthcare costs associated with advanced disease stages.

Reimbursement & Billing Impact

Reimbursement considerations include ensuring that the medical necessity for diagnostic tests and treatments is well-documented. Common denials may arise from insufficient detail in the documentation or failure to demonstrate the relationship between the underlying condition and the pulmonary hypertension. Best practices include maintaining thorough clinical notes and ensuring that all relevant tests are coded accurately to support the diagnosis.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by I27.29?

I27.29 encompasses pulmonary hypertension secondary to various conditions, including chronic obstructive pulmonary disease (COPD), interstitial lung disease, sleep apnea, and congenital heart defects. Each of these conditions can lead to increased pressure in the pulmonary arteries, necessitating careful evaluation and management.

When should I27.29 be used instead of related codes?

I27.29 should be used when pulmonary hypertension is identified as secondary to conditions not specifically categorized under other codes. It is essential to differentiate it from primary pulmonary hypertension (I27.0) and pulmonary hypertension due to left heart disease (I27.2) by documenting the specific underlying cause.

What documentation supports I27.29?

Documentation for I27.29 should include a detailed medical history, physical examination findings, results from diagnostic tests such as echocardiograms or right heart catheterization, and a clear statement of the underlying condition contributing to the pulmonary hypertension.