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. 2008 Nov 25;100(1):200–205. doi: 10.1038/sj.bjc.6604796

Table A2. Classification of chronic diseases and ICD-8 and ICD-10 diagnoses codes.

Disease category Diseases ICD-8 ICD-10
Chronic pulmonary disease Emphysema and chronic obstructive lung disease 490–493; 515–518 J40–J47; J60–J67; J68.4; J70.1; J70.3; J84.1; J92.0; J96.1; J98.2; J98.3
Connective tissue disease Diffuse connective tissue disease, Sjoegren's syndrome, rheumatoid arthritis and other inflammatory polyarthropathies and polymyalgia rheumatica 712; 716; 734; 446; 135.99 M05; M06; M08; M09; M30–M36; D86
Inflammatory Colitis ulcerosa 561 K50
Bowel diseases Crohn's disease 563 K51
Allergy Atopic dermatitis 502; 493; J30, J45–J47
  Asthma 692.59; L20, K52.2
  Food allergy 691; 692 T78