Table 1.
International Classification of Diseases, 9th revision discharge codes for immunosuppressive conditions
| Code |
Description |
| HIV/AIDS | |
| 042 | HIV disease |
| Hematological malignancy | |
| 200–208 | Lymphatic and hematopoietic tissue malignancy |
| Other immune conditions | |
| 279 | Disorders of immune mechanism |
| 288.0 | Neutropenia |
| 288.1 | Functional disorders of polymorphonuclear neutrophils |
| 288.2 | Genetic anomalies of leukocytes |
| 288.5 | Decreased WBC count |
| 288.8 | WBC disease NEC |
| 288.9 | WBC disease NOS |
| 289.83 | Myelofibrosis |
| 289.89 | Blood diseases NEC |
| 289.9 | Blood diseases NOS |
| 795.7 | Immunological findings NEC |
| 795.79 | Nonspecific immune findings NEC & NOS |
| Solid malignancy | |
| 140–199 | Organ/system malignant tumors |
| 209 | Neuroendocrine tumors |
| 235–239 | Neoplasms of uncertain behavior |
| Organ transplant | |
| 996.8 | Complications of transplanted organ |
| v42 | Organ transplant status |
| Rheumatologic/inflammatory | |
| 135 | Sarcoidosis |
| 277.3 | Amyloidosis NOS |
| 277.31 | Familial Mediterranean fever |
| 277.39 | Amyloidosis NEC |
| 340 | Multiple sclerosis |
| 341 | Other CNS demyelination |
| 357 | Acute infective polyneuritis |
| 422 | Acute myocarditis |
| 446 | Polyarteritis nodosa et al. |
| 495.9 | Allergic alveolitis/pneumonitis NOS |
| 516 | Other alveolar pneumonopathy |
| 555–558 | Enteritis and colitis |
| 695.4 | Lupus erythematosus |
| 710 | Diffuse connective tissue disease |
| 711 | Arthropathy with infection |
| 712 | Crystal arthropathies |
| 714 | Rheumatoid arthritis & inflammatory polyarthropathy |
| 720 | Inflammatory spondylopathies |
| 725 | Polymyalgia rheumatica |
Definition of abbreviations: CNS = central nervous system; NEC = not elsewhere classified; NOS = not otherwise specified; WBC = white blood cell.
Where three- or four-digit codes are listed, all associated subcodes were included.