Table 1. COVID-19 and thrombosis diagnostic codes.
ICD-10: International Classification of Diseases Tenth Revision
| ICD-10 code | Diagnosis |
| U071 | COVID-19 |
| D473 | Essential (hemorrhagic) thrombocythemia |
| D6859 | Other primary thrombophilia |
| D6869 | Other thrombophilia |
| D693 | Immune thrombocytopenic purpura |
| D6942 | Congenital and hereditary thrombocytopenia purpura |
| D6949 | Other primary thrombocytopenia |
| D6959 | Other secondary thrombocytopenia |
| D696 | Thrombocytopenia, unspecified |
| D7582 | Heparin-induced thrombocytopenia (HIT) |
| I513 | Intracardiac thrombosis, not elsewhere classified |
| I63311 | Cerebral infarction due to thrombosis of right middle cerebral artery |
| I63312 | Cerebral infarction due to thrombosis of left middle cerebral artery |
| I742 | Embolism and thrombosis of arteries of the upper extremities |
| I743 | Embolism and thrombosis of arteries of the lower extremities |
| I745 | Embolism and thrombosis of iliac artery |
| I81 | Portal vein thrombosis |
| I82401 | Acute embolism and thrombosis of unspecified deep veins of right lower extremity |
| I82402 | Acute embolism and thrombosis of unspecified deep veins of left lower extremity |
| I82403 | Acute embolism and thrombosis of unspecified deep veins of lower extremity, bilateral |
| I82411 | Acute embolism and thrombosis of right femoral vein |
| I82412 | Acute embolism and thrombosis of left femoral vein |
| I82431 | Acute embolism and thrombosis of right popliteal vein |
| I82432 | Acute embolism and thrombosis of left popliteal vein |
| I82441 | Acute embolism and thrombosis of right tibial vein |
| I82442 | Acute embolism and thrombosis of left tibial vein |
| I82451 | Acute embolism and thrombosis of right peroneal vein |
| I82452 | Acute embolism and thrombosis of left peroneal vein |
| I82462 | Acute embolism and thrombosis of left calf muscular vein |
| I824Z3 | Acute embolism and thrombosis of unspecified deep veins of distal lower extremity, bilateral |
| I82512 | Chronic embolism and thrombosis of left femoral vein |
| I825Y3 | Chronic embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral |
| I82611 | Acute embolism and thrombosis of superficial veins of right upper extremity |
| I82612 | Acute embolism and thrombosis of superficial veins of left upper extremity |
| I82613 | Acute embolism and thrombosis of superficial veins of upper extremity, bilateral |
| I82619 | Acute embolism and thrombosis of superficial veins of unspecified upper extremity |
| I82621 | Acute embolism and thrombosis of deep veins of right upper extremity |
| I82622 | Acute embolism and thrombosis of deep veins of left upper extremity |
| I82623 | Acute embolism and thrombosis of deep veins of upper extremity, bilateral |
| I82812 | Embolism and thrombosis of superficial veins of left lower extremity |
| I82A11 | Acute embolism and thrombosis of right axillary vein |
| I82A12 | Acute embolism and thrombosis of left axillary vein |
| I82B11 | Acute embolism and thrombosis of right subclavian vein |
| I82C11 | Acute embolism and thrombosis of right internal jugular vein |
| T82867A | Thrombosis due to cardiac prosthetic devices, implants and grafts, initial encounter |
| T82868A | Thrombosis due to vascular prosthetic devices, implants and grafts, initial encounter |