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Table 3 Distribution of ambulatory care visits in 2002 by principal diagnosis

From: Patterns of ambulatory care utilization in Taiwan

Diagnosis Code range in ICD-9-CM* No. of visits (%, n = 2,443,003) No. of patients (%, n = 182,474)
Infectious and parasitic diseases 001–139 55,152 (2.3) 26,734 (14.7)
Neoplasms 140–239 34,307 (1.4) 8,598 (4.7)
Endocrine, nutritional, and metabolic diseases and immunity disorders 240–279 75,787 (3.1) 14,614 (8.0)
Diseases of the blood and blood-forming organs 280–289 4,520 (0.2) 1,917 (1.1)
Mental disorders 290–319 42,345 (1.7) 8,474 (4.6)
Diseases of the nervous system and sense organs 320–389 177,879 (7.3) 60,684 (33.3)
Diseases of the circulatory system 390–459 128,160 (5.2) 20,980 (11.5)
Diseases of the respiratory system 460–519 818,672 (33.5) 130,772 (71.7)
Diseases of the digestive system 520–579 370,761 (15.2) 102,540 (56.2)
Diseases of the genitourinary system 580–629 140,962 (5.8) 37,763 (20.7)
Complications of pregnancy, child birth, and the puerperium 636–076 6,890 (0.3) 2,953 (1.6)
Diseases of the skin and subcutaneous tissue 680–709 131,872 (5.4) 47,387 (26.0)
Diseases of the musculoskeletal system and connective tissue 710–739 171,817 (7.0) 45,227 (24.8)
Congenital abnormalities 740–759 2,799 (0.1) 1,063 (0.6)
Certain conditions originating in the perinatal period 760–779 94 (0.0) 64 (0.0)
Symptoms, signs and ill-defined conditions 780–799 129,573 (5.3) 48,930 (26.8)
Injury and poisoning 800–999 131,198 (5.4) 50,090 (27.5)
Supplementary classification of factors influencing health status and contact with health services V01–V82 17,942 (0.7) 12,862 (7.0)
Supplementary classification of external causes of injury and poisoning E800–E999 726 (0.0) 489 (0.3)
Unknown   1,547 (0.1) 655 (0.4)
  1. *ICD-9-CM: International Classification of Diseases, Ninth Revision, Clinical Modification.