Refer a patient with venous thromboembolism for specialist management if they have a confirmed diagnosis of DVT or PE that requires ongoing anticoagulation treatment or mechanical intervention, especially if there are complications or contraindications to standard treatment NICE NG158.
Consider specialist referral if the patient has a provoked or unprovoked DVT or PE that may need further assessment for underlying causes or thrombophilia testing NICE NG158.
Referral is also appropriate if the patient has a high risk of recurrence, develops complications, or if outpatient management is not suitable or fails, particularly in low-risk PE cases where specialist input is needed for monitoring and follow-up plans NICE NG158.