Table 1 International Classification of Diseases codes (ICD-9-CM and ICD-10-CA) used to classify patient morbidity

Hypertension

401.x, 402.x, 403.x, 404.x, 405.x, I10.x, I11.x,

I12.x, I13.x, I15.x

Secondary Cerebrovascular Disease ^a

362.34, 430.x–438.x, G45.x, G46.x, H34.0, I60.x–I69.x

Diabetes

250.0–250.3, 250.4–250.7, 250.8, 250.9, E10.0–E10.9, E11.0–E11.9, E12.0- E12.9, E13.0–E13.9, E14.0-E14.9

Cardiac Disorders

398.91, 402.01, 402.11, 402.91, 404.01, 404.03, 404.11, 404.13, 404.91, 404.93, 410.x, 412.x, 425.4–425.9, 428.x, I09.9, I11.0, I13.0, I13.2, I25.5, I21.x, I22.x, I25.2, I42.0, I42.5–I42.9, I43.x, I50.x, P29.0

Chronic Pulmonary Disease

416.8, 416.9, 490.x–505.x, 506.4, 508.1, 508.8, I27.8, I27.9, J40.x–J47.x, J60.x–J67.x, J68.4, J70.1, J70.3

Malignancy or Tumour

140.x–172.x, 174.x–195.8, 196.x–199.x, 200.x–208.x, 238.6, 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

Dementia

290.x, 294.1, 331.2, F00.x–F03.x, F05.1, G30.x, G31.1

Mood Disorders

296.x, 311.x, F30.x, F31.x, F32.x, F33.x, F34.x, F38.x, F39.x

Renal Disease

403.01, 403.11, 403.91, 404.02, 404.03, 404.12, 404.13, 404.92, 404.93, 582.x, 583.0–583.7, 585.x, 586.x, 588.0, I12.0, I13.1, N03.2–N03.7, N05.2–N05.7, N18.x, N19.x, N25.0, V42.0, V45.1, V56.x, Z49.0–Z49.2, Z94.0, Z99.2

Peripheral Vascular Disease

093.0, 437.3, 440.x, 441.x, 443.1–443.9, 447.1, 557.1, 557.9, I70.x, I71.x, I73.1, I73.8, I73.9, I77.1, I79.0, I79.2, K55.1, K55.8, K55.9, V43.4, Z95.8, Z95.9

Liver Disease

070.22, 070.23, 070.32, 070.33, 070.44, 070.54, 070.6, 070.9, 456.0–456.2, 570.x, 571.x, 572.2–572.8, 573.3, 573.4, 573.8, 573.9, B18.x, I85.0, I85.9, I86.4, I98.2, K70.0–K70.4, K70.9, K71.1, K72.1, K72.9, K76.5, K76.6, K76.7, K71.3–K71.5, K71.7, K73.x, K74.x, K76.0, K76.2–K76.4, K76.8, K76.9, V42.7, Z94.4

Rheumatic Disease

446.5, 710.0–710.4, 714.0–714.2, 714.8, 725.x, M05.x, M06.x, M31.5, M32.x–M34.x, M35.1, M35.3, M36.0

Peptic Ulcer Disease

531.x–534.x, K25.x–K28.x