ICD-10 Code I27.2 – Other secondary pulmonary hypertension (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I27.2 – Other secondary pulmonary hypertension
What it is
I27.2 identifies pulmonary hypertension that develops because of another underlying condition, rather than as a primary disorder. Use it when documentation states secondary pulmonary hypertension and does not specify a more exact code.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include exertional dyspnea, fatigue, chest discomfort, or signs of right-sided heart strain, but you should code from the documented diagnosis.
When to use this code
Use this code when the provider documents secondary pulmonary hypertension without naming a more specific cause or subtype. It may also fit when the record confirms pulmonary hypertension due to another disease, but the documentation is not detailed enough for a more specific code.
Check the chart for the underlying condition and any additional codes needed. If the cause is clearly identified elsewhere, you may need a more specific pulmonary hypertension code instead of this one.
Do not use for
Do not use I27.2 for primary pulmonary hypertension or when the record specifies a different pulmonary hypertension category. Do not guess the cause if documentation is unclear.
Coding tip
Code the underlying condition first when documented, and use I27.2 only when secondary pulmonary hypertension is confirmed but not further specified.