Table 2.

Distribution of patients in the 22 major groups of ICD-codes (ICD-10-SE)

I	Certain infections and parasites diseases	A00 – B99	N = 27
II	Neoplasms	C00 – D48	N = 18
III	Diseases of the blood and blood forming organs and certain diseases involving the immune mechanisms	D50 – D89	N = 6
IV	Endocrine, nutritional and metabolic diseases	E00 – E90	N = 8
V	Mental and behavioural disorders	F00 – F99	N = 47
VI	Disease of the nervous system	G00 – G99	N = 27
VII	Diseases of the eye and adnexa	H00 – H59	N = 0
VIII	Diseases of the ear and mastoid process	H60 – H95	N = 6
IX	Diseases of the circulatory system	I00 – I99	N = 112
X	Diseases of the respiratory system	J00 – J99	N = 71
XI	Diseases of the digestive system	K00 – K93	N = 49
XII	Diseases of the skin and subcutaneous tissue	L00 – L99	N = 3
XIII	Diseases of the musculoskeletal tissue and connective tissue	M00 – M99	N = 43
XIV	Diseases of the genitourinary system	N00 – N99	N = 37
XV	Pregnancy childbirth and puerperium	O00 – O99	N = 2
XVI	Certain conditions originating from the perinatal period	P00 – P96	N = 0
XVII	Congenital malformations, deformation and chromosomal malformations	Q00 – Q99	N = 0
XVIII	Symptoms, signs and abnormal clinical findings, not elsewhere classified	R00 – R99	N = 188
XIX	Injury, poisoning and certain other consequences of external causes	S00 – T98	N = 135
XX	External causes of morbidity and mortality	V00 – V99	N = 0
XXI	External causes to disease and death	Y01 – Y98	N = 5
XXII	Factors influencing health status and contact with health services	Z00 – Z99	N = 30