Table 1.
Comparison of codes used to identify the venous leg ulcer cohort in both the GPRD and THIN databases
| GPRD medical code | Read/OXMIS code | Read/OXMIS term | Used in the THIN database |
|---|---|---|---|
| 216082 | G830.00 | Varicose veins of the leg with ulcer | Yes |
| 345418 | G832.00 | Varicose veins of the leg with ulcer and eczema | Yes |
| 339862 | G837.00 | Venous ulcer of leg | Yes |
| 339887 | 14F5.00 | H/O: venous leg ulcer | No, OXMIS code |
| 219441 | K914 RR | Excision varicose ulcer | No, OXMIS code |
| 271667 | M271500 | Venous ulcer of leg | Yes |
| 303889 | 4540 | Varicose ulcer leg | No, OXMIS code |
| 303890 | 4540N | Varicose ulcer | No, OXMIS code |
| 303892 | 4540NE | Venous ulcer | No, OXMIS code |
| 280021 | G832.00 | Varicose veins of the leg with ulcer and eczema | Yes |
| 303891 | 4540NA | Ulcer stasis varicose | No, OXMIS code |
| 289131 | G835.00 | Infected varicose ulcer | Yes |
| 256627 | 4540A | Ulcer varicose infected (leg) | No, OXMIS code |
| 262397 | M271.00 | Non-pressure ulcer lower limb | Yes |
| 256936 | 707 GL | Ulcer lower leg | No, OXMIS code |
| 235019 | M271.13 | Leg ulcer NOS | Yes |
| 304723 | 707 G | Ulcer leg | No, OXMIS code |
| 304724 | 707 GA | Ulcer ankle | No, OXMIS code |
| 304718 | 707 AC | Ulcer skin | No, OXMIS code |
| 256937 | 707L | Ulcer gravitational chronic | No, OXMIS code |
| 256935 | 707 AL | Ulcer lower extremity | No, OXMIS code |
| 304719 | 707 A | Ulcer skin chronic | No, OXMIS code |