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Chronic Obstructive Pulmonary Disease (COPD)

  • NOS - not otherwise specified
  • U.S. Department of Health, Education, and Welfare: Eighth Revision International Classification of Diseases, adapted for use in the United States. PHS Pub. No. 1693. ICDA Volume 1. 1967.
  • World Health Organization: International Classification of Diseases, Ninth Revision, Volume 1. 1977.
  • World Health Organization: International Statistical Classification of Diseases and Related Health Problems 10th Revision, Volume 1. 1992.