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ICD-10 Guide
ICD-10 CodesI15.2

I15.2

Billable

Hypertension secondary to endocrine disorders

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

Code Description

ICD-10 I15.2 is a billable code used to indicate a diagnosis of hypertension secondary to endocrine disorders.

Key Diagnostic Point:

Hypertension secondary to endocrine disorders, coded as I15.2, refers to elevated blood pressure resulting from underlying endocrine conditions such as hyperaldosteronism, Cushing's syndrome, pheochromocytoma, and thyroid disorders. Clinically, patients may present with symptoms of hypertension, headaches, palpitations, and signs of the specific endocrine disorder. The anatomy involved primarily includes the adrenal glands, thyroid gland, and the hypothalamic-pituitary axis, which regulate hormone production affecting blood pressure. Disease progression can lead to complications such as cardiovascular disease, renal impairment, and stroke if not managed effectively. Diagnostic considerations include a thorough patient history, physical examination, and laboratory tests to identify the underlying endocrine disorder. Imaging studies may also be warranted to assess for tumors or structural abnormalities contributing to hypertension. Accurate diagnosis is crucial for effective treatment and management of both hypertension and the underlying endocrine disorder.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires identification of the specific endocrine disorder causing hypertension.
  • Treatment complexity: Management may involve addressing both hypertension and the underlying endocrine condition, which can vary significantly.
  • Documentation requirements: Detailed documentation of the endocrine disorder and its relationship to hypertension is essential.
  • Coding specificity: Requires precise coding to differentiate from primary hypertension and other secondary causes.

Audit Risk Factors

  • Common coding errors: Misclassification of primary versus secondary hypertension.
  • Documentation gaps: Incomplete records regarding the endocrine disorder.
  • Billing challenges: Potential denials if the relationship between hypertension and the endocrine disorder is not clearly established.

Specialty Focus

Medical Specialties

Endocrinology

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

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

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Hypertension secondary to endocrine disorders has significant clinical implications, as it can lead to increased morbidity and mortality from cardiovascular diseases. Understanding the population health impact is crucial, as these conditions may be underdiagnosed, leading to inadequate treatment and higher healthcare utilization. Quality measures should focus on early detection and management of endocrine disorders to improve patient outcomes and reduce the burden of hypertension-related complications.

ICD-9 vs ICD-10

Hypertension secondary to endocrine disorders has significant clinical implications, as it can lead to increased morbidity and mortality from cardiovascular diseases. Understanding the population health impact is crucial, as these conditions may be underdiagnosed, leading to inadequate treatment and higher healthcare utilization. Quality measures should focus on early detection and management of endocrine disorders to improve patient outcomes and reduce the burden of hypertension-related complications.

Reimbursement & Billing Impact

Reimbursement considerations include ensuring that the diagnosis is supported by clinical evidence and that the treatment plan addresses both conditions. Common denials may arise from insufficient documentation linking the hypertension to the endocrine disorder. Coding best practices include using the most specific code available and ensuring that all relevant clinical information is included in the patient's medical record 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 I15.2?

I15.2 covers hypertension secondary to conditions such as primary hyperaldosteronism, Cushing's syndrome, pheochromocytoma, and hyperthyroidism. Each condition has specific diagnostic criteria that must be met for accurate coding.

When should I15.2 be used instead of related codes?

I15.2 should be used when hypertension is directly attributable to an endocrine disorder, as opposed to I15.0 or I15.1, which pertain to renal or other specified causes. Clear documentation linking the hypertension to the endocrine disorder is essential.

What documentation supports I15.2?

Documentation should include a confirmed diagnosis of the underlying endocrine disorder, relevant laboratory results, imaging studies if applicable, and a clear note on how the endocrine disorder contributes to the patient's hypertension.