ICD-10 Code I26.93 – Single subsegmental thrombotic pulmonary embolism without acute cor pulmonale (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I26.93 – Single subsegmental thrombotic pulmonary embolism without acute cor pulmonale
What it is
This code identifies a blood clot in one subsegmental branch of a pulmonary artery. It applies when the embolism is thrombotic and there is no acute cor pulmonale documented.
Clinical signs
Clinical features may include sudden shortness of breath, pleuritic chest pain, cough, or unexplained tachycardia. Imaging or other diagnostic findings should support a single subsegmental pulmonary embolus; clinical features vary, refer to documentation.
When to use this code
Use I26.93 when the provider documents a single subsegmental pulmonary embolism caused by thrombus and specifically states no acute cor pulmonale. This is appropriate for confirmed PE in a subsegmental artery on imaging or in the final diagnosis.
Code it only when the record clearly distinguishes the clot as thrombotic and limited to one subsegmental vessel. Check documentation if the note uses uncertain language, multiple emboli, or does not specify cor pulmonale status.
Do not use for
Do not use this code for nonthrombotic pulmonary embolism, multiple emboli, or more proximal pulmonary artery involvement. Do not use it if acute cor pulmonale is documented.
Coding tip
Verify both location and cor pulmonale status in the provider’s final diagnosis before assigning I26.93.