Translation of Korean Medicine Use to ICD-Codes Using National Health Insurance Service-National Sample Cohort

Table 1

Summary of U codes or code for special purposes in the Korean Classification of Diseases 6, which was revised in 2009.

3-digit code	Code name	Number of 4-digit subcategories
U20–U33	Disease name in Oriental medicine	97
U20-U21	General diseases	12
U22	Mental and behavioral disorders	3
U23-U24	Diseases of the nervous system	12
U25	Diseases of eye, tongue, and throat	6
U26	Diseases of the circulatory system	4
U27	Diseases of the respiratory system	8
U28	Diseases of the digestive system	10
U29	Diseases of the skin and subcutaneous tissue	8
U30	Diseases of the musculoskeletal system and connective tissue	7
U31	Diseases of the genitourinary system	10
U32	Diseases of the female genitourinary system and those related to pregnancy	8
U33	Diseases of retardation and development, childhood, and adolescence	9
U50–U79	Disease pattern/syndrome in Oriental medicine	191
U50	Disease pattern/syndrome of six excesses	9
U51–U57	Disease pattern/syndrome of the six meridians	45
	Greater yang disease pattern/syndrome	14
	Yang brightness disease pattern/syndrome	6
	Lesser yang disease pattern/syndrome	6
	Greater yin disease pattern/syndrome	3
	Lesser yin disease pattern/syndrome	10
	Reverting yin disease pattern/syndrome	6
U58	Disease pattern/syndrome of defense-qi-nutrient-blood	9
U59	Disease pattern/syndrome of triple energizer	4
U60–63	Disease pattern/syndrome of qi-blood-yin-yang-fluid-humor	30
	Disease pattern/syndrome of qi	6
	Disease pattern/syndrome of blood	6
	Disease pattern/syndrome of qi-blood-yin-yang	9
	Disease pattern/syndrome of fluid and humor	9
U64–U79	Disease pattern/syndrome of viscera and bowels	94
	Liver disease pattern/syndrome	14
	Heart disease pattern/syndrome	12
	Spleen disease pattern/syndrome	7
	Lung disease pattern/syndrome	11
	Kidney disease pattern/syndrome	8
	Gallbladder disease pattern/syndrome	4
	Stomach disease pattern/syndrome	5
	Large intestine disease pattern/syndrome	4
	Small intestine disease pattern/syndrome	3
	Bladder disease pattern/syndrome	2
	Disease pattern/syndrome of thoroughfare, conception vessels, and uterus	7
	Combined disease pattern/syndrome of viscera and bowels	17
U95–U98	Disease pattern/syndrome of Four-Constitutional Medicine	18
U95	Soeumin disease pattern/syndrome	5
U96	Soyangin disease pattern/syndrome	5
U97	Taeumin disease pattern/syndrome	5
U98	Taeyangin disease pattern/syndrome	3