Summary of the anatomic classification (A) in the 2020 update of the CEAP classification
| A class | Description | ||
|---|---|---|---|
| As | Superficial | ||
| Old | New | Description | |
| 1. | Tel | Telangiectasia | |
| 1. | Ret | Reticular veins | |
| 2. | GSVa | Great saphenous vein above knee | |
| 3. | GSVb | Great saphenous vein below knee | |
| 4. | SSV | Small saphenous vein | |
| AASV | Anterior accessory saphenous vein | ||
| 5. | NSV | Nonsaphenous vein | |
| Ad | Deep | ||
| Old | New | Description | |
| 6. | IVC | Inferior vena cava | |
| 7. | CIV | Common iliac vein | |
| 8. | IIV | Internal iliac vein | |
| 9. | EIV | External iliac vein | |
| 10. | PELV | Pelvic veins | |
| 11. | CFV | Common femoral vein | |
| 12. | DFV | Deep femoral vein | |
| 13. | FV | Femoral vein | |
| 14. | POPV | Popliteal vein | |
| 15. | TIBV | Crural (tibial) vein | |
| 15. | PRV | Peroneal vein | |
| 15. | ATV | Anterior tibial vein | |
| 15. | PTV | Posterior tibial vein | |
| 16. | MUSV | Muscular veins | |
| 16. | GAV | Gastrocnemius vein | |
| 16. | SOV | Soleal vein | |
| Ap | Perforator | ||
| Old | New | Description | |
| 17. | TPV | Thigh perforator vein | |
| 18. | CPV | Calf perforator vein | |
| An | No venous anatomic location identified | ||