Appendix 3.

ICD-9 Codes Used to Determine Whether a Subject Was at High Risk for Complications from Influenza

ICD-9 codeDescription
011Pulmonary tuberculosis
012Other respiratory tuberculosis
031.0Pulmonary diseases due to other mycobacterium
042HIV infection with specified conditions
043HIV infection causing other specified conditions
044Other HIV infections
250Diabetes mellitus
270Disorders of amino acid transport and metabolism (Fanconi-de Toni-Debre syndrome, alkaptonuria, others)
271.2Hereditary fructose intolerance
271.4Renal glycosuria
271.8Other specified disorders of carbohydrate transport and metabolism
271.9Unspecified disorders of carbohydrate transport and metabolism
272Disorders of lipoid metabolism
277.0Cystic fibrosis
277.2Other disorders of purine and pyrimidine metabolism
277.6Other deficiencies of circulating enzymes (eg, α-1 and antitrypsin deficiency)
277.6Other deficiencies of circulating enzymes
277.8Other specified disorders of metabolism
279.0Deficiency of humoral immunity
279.00Hypogammaglobulinemia, unspecified
279.01Selective IgA immunodeficiency
279.02Selective IgM
279.04Congenital hypogammaglobulinemia
279.1Deficiency of cell-mediated immunity
279.10Predominant T cell factor
279.11DiGeorge’s syndrome
279.12Wiscott-Aldrich syndrome
279.19Nezelof’s syndrome
279.2Combined immunity deficiency
279.3Unspecified immunity deficiency
279.8Other specified disorders involving the immune mechanism
279.9Unspecified disorder of immune mechanism
282Hereditary hemolytic anemias (also includes sickle cell)
284Aplastic anemias
288.0Agranulocytosis (neutropenia, etc)
288.1Functional disorders of polymorphonuclear neutrophils
288.2Genetic anomalies of leukocytes
289.7Methemoglobinemia, hemoglobin M disease, congenital NADP-methemoglobin-reductase deficiency
294Other organic psychotic conditions
310Specific nonpsychotic mental disorders due to organic brain damage
318Other specified mental retardation
330Cerebral degenerations usually manifest in childhood
331Other cerebral degenerations
333Other extrapiramidal diseases
334Spinocerebellar disease
335Anterior horn cell disease (Werndig-Hoffman disease, spinal muscular atrophy, amyotrophic lateral sclerosis, etc)
343Infantile cerebral palsy
358.0Myasthenia gravis
358.1Myasthenia syndromes in diseases classified elsewhere
359.1Hereditary progressive muscular dystrophy
359.2Myotonic disorders
391Rheumatic fever with heart involvement
393Chronic rheumatic pericarditis
394Diseases of mitral valve
395Diseases of aortic valve
396Diseases of mitral and aortic valves
397Diseases of other endocardial structures
398Other and unspecified rheumatic heart diseases
401.0Malignant essential hypertension
403Hypertensive renal disease
403.0Malignant hypertensive renal disease
403.91Unspecified hypertensive renal disease with renal failure
404Hypertensive heart and renal disease
404Hypertensive heart and renal disease
405Secondary hypertension
416Chronic pulmonary heart disease (includes primary pulmonary hypertension, kyphoscoliotic heart disease, and other chronic pulmonary heart disease)
417Other diseases of pulmonary circulation
423.1Adhesive pericarditis
423.2Constrictive pericarditis
424Other disease of endocardium
424.0Mitral valve disorders
424.1Aortic valve disorders
424.2Tricuspid valve disorders
424.3Pulmonary valve disorders
424.9Endocarditis, valve unspecified
427Cardiac dysrhythmias
428Heart failure
428.0Heart failure
428.1Heart failure
428.9Heart failure
429.0Myocarditis, unspecified
429.1Myocardial degeneration
429.2Cardiovascular disease, unspecified
429.4Functional disturbances following cardiac surgery
429.8Other ill-defined heart diseases
446.0Polyarteritis nodosa
446.21Goodpasture’s syndrome
446.4Weger’s granulomatosis
446.6Thrombotic microangiopathy
446.7Takayasu’s disease
491Chronic bronchitis
495Extrinsic allergic alveolitis
496Chronic airway obstruction, not elsewhere classified
507Pneumonitis due to solids and liquids
515Postinflammatory pulmonary fibrosis
516.0Pulmonary alveolar proteinosis
516.1Idiopathic pulmonary hemosiderosis
516.3Idiopathic fibrosing alveolitis
517.8Lung involvement in other diseases classified elsewhere
518.0Pulmonary collapse
519.0Tracheotomy complication
571Chronic liver disease and cirrhosis
572Liver abscess and sequelae of chronic liver disease
581Nephrotic renal disease
582Chronic glomerulonephritis
583Nephritis and nephropathy, not specified as acute or chronic
585Chronic renal failure
586Renal failure, unspecified
587Renal sclerosis, unspecified (atrophy of the kidney, etc)
588Disorders resulting from impaired renal function
593.81Vascular disorders of kidney
710Diffuse diseases of connective tissues
710.0Systemic lupus erythematosus
710.2Sjoegren’s disease
745Bulbus cordis anomalies and anomalies of cardiac septal closure
746Other congenital anomalies
747.0Patent ductus arteriosus
747.1Coarctation of aorta
747.2Other anomalies of aorta
747.3Anomalies of pulmonary artery
747.4Anomalies of great vein
748.4Congenital cystic lung
748.5Agenesis, hypoplasia and dysplasia of lung
748.61Congenital bronchiectasis
748.61Congenital bronchiectasis
754.2Congenital musculoskeletal deformity of spine
756.4Asphyxiating thoracic dystrophy
759.0Anomalies of spleen
759.3Situs inversus
770.2Interstitial emphysema and related conditions
770.7Chronic pulmonary disease arising in the neonatal period, including bronchopulmonary dysplasia, interstitial pulmonary fibrosis of infancy, Wilson-Mikity syndrome
960.7Antineoplastic antibiotics
963.1Antineoplastic and immunosuppressive drugs
V42.0Kidney replaced by transplant
V42.1Heart replacement by transplant
V42.6Lung replaced by transplant
V42.8Bone marrow transplant
V45.0Cardiac pacemaker in situ
V45.1Renal dialysis status
V45.81Aortocoronary bypass status
V56Encounter for dialysis