Table 2.
ICD-10 codes used in methodology.
| Patient diagnoses | ||
|---|---|---|
| Acute pancreatitis | Drug induced acute pancreatitis without necrosis or infection | K85.3 |
| Alcohol induced acute pancreatitis | K85.2 | |
| Biliary acute pancreatitis | K85.1 | |
| Acute pancreatitis, unspecified | K85.9 | |
| Other acute pancreatitis | K85.8 | |
| Acute pancreatitis | K85 | |
| Other acute pancreatitis without necrosis or infection | K85.80 | |
| Drug induced acute pancreatitis | K85.3 | |
| Other acute pancreatitis with uninfected necrosis | K85.81 | |
| Idiopathic acute pancreatitis | K85.0 | |
| Idiopathic acute pancreatitis without necrosis or infection | K85.00 | |
| Acute pancreatitis without necrosis or infection, unspecified | K85.90 | |
| Acute pancreatitis with uninfected necrosis, unspecified | K85.91 | |
| Biliary acute pancreatitis without necrosis or infection | K85.10 | |
| Alcohol induced acute pancreatitis without necrosis or infection | K85.20 | |
| AMS | Altered mental status, unspecified | R41.82 |
| Pleural effusion | Pleural effusion, not elsewhere classified | J90 |
| C. difficile | Enterocolitis due to C. difficile, recurrent | A04.71 |
| Enterocolitis due to C. difficile | A04.7 | |
| Enterocolitis due to C. difficile, not specified as recurrent | A04.72 | |
| Outcomes | ||
| ICU admission | CPT Code 1013729 | |
| Necrotizing pancreatitis | Acute pancreatitis with uninfected necrosis, unspecified | K85.91 |
| Biliary acute pancreatitis with infected necrosis | K85.12 | |
| Acute pancreatitis with infected necrosis, unspecified | K85.92 | |
| Idiopathic acute pancreatitis with uninfected necrosis | K85.01 | |
| Other acute pancreatitis with uninfected necrosis | K85.81 | |
| Idiopathic acute pancreatitis with infected necrosis | K85.02 | |
| Other acute pancreatitis with infected necrosis | K85.82 | |
| Alcohol induced acute pancreatitis with infected necrosis | K85.22 | |
| Alcohol induced acute pancreatitis with uninfected necrosis | K85.21 | |
| Drug induced acute pancreatitis with infected necrosis | K85.32 | |
| Drug induced acute pancreatitis with uninfected necrosis | K85.31 | |
| Biliary acute pancreatitis with uninfected necrosis | K85.11 | |
| HCAP | Pneumonia, unspecified organism | J18 |
| Respiratory failure | Acute respiratory failure | J96.0 |
| Acute respiratory failure, unspecified whether with hypoxia or hypercapnia | J96.00 | |
| Acute and chronic respiratory failure, unspecified whether with hypoxia or hypercapnia | J96.20 | |
| Acute respiratory failure with hypoxia | J96.01 | |
| Acute respiratory failure with hypercapnia | J96.02 | |
| Acute and chronic respiratory failure | J96.2 | |
| Acute and chronic respiratory failure with hypoxia | J96.21 | |
| Acute and chronic respiratory failure with hypercapnia | J96.22 | |
| AKI | Acute kidney failure | N17 |
| Acute kidney failure, unspecified | N17.9 | |
| Other acute kidney failure | N17.8 | |
| Propensity score matching components | ||
| COPD | J44 | |
| CAD | I25.10 | |
| Nicotine dependence | Z87.891 | |
| Heart failure | I50 | |
| Hypertension | I10-I16 | |
| CKD | N18 | |
| Alcohol abuse | F10.1 | |
| GERD | K21 | |
| Hyperlipidemia | E78.5 | |
| Anemia | D64.9 | |
AKI = acute kidney injury, AMS = altered mental status, CAD = coronary artery disease, CKD = chronic kidney disease, COPD = chronic obstructive pulmonary disease, GERD = gastroesophageal reflux disease, HCAP = healthcare-associated pneumonia, ICU = intensive care unit.