ICD-10 Code I26.9 – Pulmonary embolism without acute cor pulmonale (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I26.9 – Pulmonary embolism without acute cor pulmonale
What it is
This code identifies a pulmonary embolism, meaning a blood clot has traveled to and blocked an artery in the lungs. It is used when acute cor pulmonale is not documented.
Clinical signs
Common findings include sudden shortness of breath, pleuritic chest pain, cough, tachycardia, or unexplained hypoxemia. Clinical features vary; refer to documentation.
When to use this code
Use I26.9 when the provider documents pulmonary embolism but does not specify acute cor pulmonale. It also fits cases where the embolism is confirmed and no more specific PE subtype is recorded. Check documentation if the record mentions chronic pulmonary embolism, infarction, or a different acuity.
Do not use for
Do not use this code if acute cor pulmonale is documented, because a different ICD-10 code applies. Also avoid it when the record only states suspected PE or another venous thromboembolism diagnosis.
Coding tip
Code from the provider’s final diagnosis and document whether acute cor pulmonale is present or absent.