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Home/Diagnosis/ICD-10 Coding for Pulmonary Arterial Hypertension

ICD-10 Coding for Pulmonary Arterial Hypertension

I27.0
I27.21

Complete ICD-10-CM coding and documentation guide for icd-10 coding for pulmonary arterial hypertension includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
PAH
Primary Pulmonary Hypertension
Idiopathic Pulmonary Arterial Hypertension
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Key Information: ICD-10 Coding for Pulmonary Arterial Hypertension

Essential facts and insights about ICD-10 Coding for Pulmonary Arterial Hypertension

Use ICD-10 code I27.0 for primary pulmonary hypertension, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Primary pulmonary hypertension

Billable Code
I27.0
Billable

Diagnostic Criteria

clinical_criteria:
  • • Confirmed idiopathic PAH via RHC with exclusion of secondary causes

Applicable To

  • • Idiopathic pulmonary arterial hypertension
  • • Heritable pulmonary arterial hypertension

Important Notes

  • • Ensure RHC results are documented to support the use of this code.

Secondary pulmonary arterial hypertension

Billable Code
I27.21
Billable

Diagnostic Criteria

clinical_criteria:
  • • RHC showing mean PAP ≥20 mmHg, PAWP ≤15 mmHg, PVR ≥3 Wood units
  • • Documentation linking PAH to an underlying condition

Applicable To

  • • PAH due to connective tissue disease
  • • PAH due to drug use

Important Notes

  • • Ensure the underlying condition is clearly documented and linked to PAH.
Ancillary Codes

Additional codes that may be used with this diagnosis

M34.0

Progressive systemic sclerosis

Use to indicate scleroderma as an underlying cause of secondary PAH.

B20

HIV disease

Use to indicate HIV as an underlying cause of secondary PAH.

Frequently Asked Questions

What is the ICD-10 code for pulmonary arterial hypertension?

The ICD-10 code for idiopathic or heritable pulmonary arterial hypertension is I27.0, while secondary pulmonary arterial hypertension is coded as I27.21.

How is pulmonary arterial hypertension diagnosed?

Pulmonary arterial hypertension is diagnosed using right heart catheterization, confirming mean PAP ≥20 mmHg, PAWP ≤15 mmHg, and PVR ≥3 Wood units.

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