Elixhauser et al listed comorbities using administrative data (ICD-9 and DRG codes). The authors are MEDTAP International, Inc, Agency for Health Care Policy and Research (AHCPR), WESTAT, Inc, and MEDSTAT Group, Inc.
A condition is considered a comorbidity if it is not the reason for the hospital admission. If the patient has a DRG for the diagnosis then the condition is not counted as a comorbidity.
|
Diagnosis |
ICD-9-CM Codes |
|---|---|
|
congestive heart failure |
398.91, 402.11, 402.91. 404.11, 404.13, 404.91, 404.93, 428.x |
|
cardiac arrhythmia |
426.10, 426,11, 426.13, 426.2 to 426.53, 426.6 to 426.89, 427.0, 427.2, 427.31, 427.60, 427.9, 785.0, V45.0, V53.3 |
|
valvular disease |
093.20 to 093.24, 394.0 to 397.1, 424.0 to 424.91, 746.3 to 746.6, V42.2, V43.3 |
|
pulmonary circulation disorder |
416.x, 417.9 |
|
peripheral vascular disorer |
440.x, 441.2, 441.4, 441.7, 441.9, 443.x, 447.1, 557.1, 557.9, V43.4 |
|
hypertension (uncomplicated or complicated) |
401.1, 401.9, 402.10, 402.90, 404.10, 404.90, 405.11, 405.19, 405.91, 405.99 |
|
paralysis |
342.0 to 342.12, 342.9 to 344.9 |
|
other neurological disorders |
331.9, 332.00, 333.4, 333.5, 334.x, 335.x, 340, 341.x, 345.00 to 345.11, 345.40 to 345.51, 345.8x, 345.90, 345.91, 348.1, 348.3, 780.3, 784.3 |
|
chronic pulmonary disease |
490 to 492.8, 493.00 to 493.91, 494, 495.0 to 505, 506.4 |
|
hypothyroidism |
243 to 244.2, 244.8, 244.9 |
|
renal failure |
403.11, 403.91, 404.12, 404.92, 585, 586, V42.0, V45.1, V56.0, V56.8 |
|
liver disease |
070.32, 070.33, 070.54, 456.0, 456.1, 456.20, 456.21, 571.0, 571.2, 571.3, 571.4x, 571.5, 571.6, 571.8, 571.9, 572.3, 572.8, V42.7 |
|
peptic ulcer disease, nonbleeding |
531.70, 531.90, 532.70, 532.90, 533.70, 533.90, 534.70, 534.90, V12.71 |
|
AIDS |
042 to 044.9 |
|
malignant lymphoma |
200.00 to 202.38, 202.50 to 203.01, 203.8 to 203.81, 238.6, 273.3, V10.71, V10.72, V10.79 |
|
rheumatoid arthritis (RA) or collagen vascular disease |
701.0, 710.x, 714.x, 720.x, 725 |
|
coagulopathy |
286.x, 287.1, 287.3, 287.4, 287.5 |
|
obesity |
278.0 |
|
weight loss |
260 to 263.9 |
|
fluid and/or electrolyte disorder |
276.x |
|
anemia, blood loss |
280.0 |
|
anemia, deficiency |
281.x, 285.9 |
|
alcohol abuse |
291.1, 291.2, 291.5, 291.8, 291.9, 303.90 to 303.93, 305.00 to 305.03, V113 |
|
drug abuse |
292.0, 292.82 to 292.89, 292.9, 304.00 to 304.93, 305.20 to 305.93 |
|
psychoses |
295.00 to 298.9, 299.10, 299.11 |
|
depression |
300.4, 301.12, 309.0, 309.1, 311 |
For the following only 1 in each pair is counted. For diabetes complications takes precedent over uncomplicated. For solid cancer metastatic cancer takes precedent over non-metatatic tumor.
|
Diagnosis |
ICD-9-CM Codes |
|---|---|
|
diabetes, uncomplicated |
250.00 to 250.33 |
|
diabetes, complicated |
250.40 to 250.73, 250.90 to 250.93 |
|
solid tumor without metastases |
140.0 to 172.9, 174.0 to 175.9, 179 to 195.8, V10.00 to V10.9 |
|
metastatic cancer |
196.0 to 199.1 |
Interpretation:
• minimum number of comorbidities: 0
• maximum number of comorbidities: 28 (since most patient will be admitted for one or more of these conditions, the maximum for most patients would be 27)
• The authors felt that comorbidities had independent effects on outcomes and should not be simplified into an index.
Purpose: To identify significant comorbidities for a patient in the hospital using the measures of Elixhauser et al.
Objective: comorbid conditions
ICD-10: R69,
