Table 1.
ICD-9-CM and ICD-10 coding scheme used to define variables in database
| Variables | ICD-9-CM code | ICD-10 code |
| Cerebrovascular disease | 430.x–438.x | G45.x, G46.x, H34.0, I60.x–I69.x |
| Pulmonary (COPD) | 490.x–496.x, 500.x–505.x, 506.4 | I27.8, I27.9, J40.x–J47.x, J60.x–J67.x, J68.4, J70.1, J70.3 |
| Congestive heart failure | 428.x | I09.9, I11.0, I13.0, I13.2, I25.5, I42.0, I42.5–I42.9, I43.x, I50.x, P29.0 |
| PVD | 441.x, 443.9, 785.4, V43.4 | I70.x–I71.x, I73.1–I73.9, I77.1, I79.0, I79.2, K55.1, K55.8, K55.9, Z95.8, Z95.9 |
| Liver/GI | ||
| Mild Liver Disease | 571.2, 571.5, 571.6, 571.4 | B18.x, K70.0–K70.3, K70.9, K71.3–K71.5, K71.7, K73.x, K74.x, K76.0, K76.2–K76.4, K76.8, K76.9, Z94.4 |
| Peptic Ulcer Disease | 531x–534.x | K25–-K28.x |
| Moderate Severe Liver Disease | 572.2, 572.3, 572.4, 572.8, 456.0–456.21 | I85.0, I85.9, I86.4, I98.2, K70.4, K71.1, K72.1, K72.9, K76.5–K76.7 |
| Renal disease | 582.x, 583.x, 584.x, 585.x, 586.x, 588.x | I12.0, I13.1, N03.2–N03.7, N05.2–N05.7, N18.x, N19.x, N25.0, Z49.0–Z49.2, Z94.0, Z99.2 |
| Malignancy/Metastatic disease | 140.x–172.x, 174.x–208.x | C00.x–C26.x, C30.x–C34.x, C37.x–C41.x, C43.x, C45.x–C58.x, C60.x–C76.x, C77.x–C80.x, C81.x–C85.x, C88.x, C90.x–C97.x |
| Hypertension | 401.x–405.x | I10.x, I11.x–I13.x, I15.x |
| Hyperlipidemia | 272.0, 272.1, 272.2, 272.3, 272.4 | E78.0–E78.5 |
| Dialysis | V42.0, V45.1, V56.0, V56.1, V56.8, 39.27, 39.42, 39.93–39.95, 54.98 | Z49.x, Z99.2 Procedure codes: 1.KY.76, 1.OT.53, 1.PZ.21 |
| Diabetes Type 1 | 250.0 – 250.9 with 5th digits 1 & 3 | E10.x, E13.10, E13.12, E14.10, E14.12 |
| Diabetes Type 2 | 250.0 – 250.9 with 5th digits 0 & 2 | E11.x, E13.0, E14.0 |
| Current Smoker | 305.10, 305.11, 305.12 | F17.x, T65.2, Z50.8, Z71.6, Z72.0, P04.2 Procedure codes*: 5.AD.14.BK, 7.SP.10.VK |
| Prior MI | 412.x | I25.2 |
| INDICATION | ||
| MI | 410.x | I21.x–I23.x |
| Unstable angina | 411.1, 413.0, 411.89, 411.81 | I20.0, I24.x |
| Stable angina | 413.1, 413.9 | I20.8, I20.9, I25.0, I25.1, I25.8, I25.9 |
| Other | None of the above codes for indication present | None of the above codes for indication present |
| Prior CABG | V45.81 | Z95.1 |
| Prior PCI | V45.82 | Z95.5 |
* Procedure codes can by found in ICD-10-CA/CCI (Canadian Classification of Health Interventions)