Table 5.

ICD-9-CM codes used to identify underlying and comorbid conditions

ConditionICD-9-CM Codes
Cerebrovascular disease362.34, 430.x-438.x
Chronic obstructive pulmonary disease416.8, 416.9, 490.x-505.x, 506.4, 508.1, 508.8
Congestive heart failure428.0
Coronary heart disease410.x-414.x, 429.2, V45.81
Dementia290.x, 294.1, 331.2
Diabetes mellitus250.x
Hypertension401.x-405.x, 437.2
Kidney disease403.01, 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, V42.0, V45.1, V56.x
Liver cirrhosis572.4
Metastatic carcinoma196.x-199.x
Nephritis, nephrotic syndrome, and nephrosis580–589
Peripheral vascular disease093.0, 437.3, 440.x, 441.x, 443.1–443.9, 47.1, 557.1, 557.9, V43.4
Rheumatic disease446.5, 710.0 through 710.4, 714.0–714.2, 714.8, 725.x
Syndrome of inappropriate secretion of antidiuretic hormone253.6
  • Abbreviations: ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification.