Effect of Comorbidity on Lung Cancer Diagnosis Timing and Mortality: A Nationwide Population-Based Cohort Study in Taiwan

Table 1

ICD-9-CM codes used to identify comorbidity.

Pulmonary diseases	Diagnosis	ICD-9-CM
No	Cerebrovascular accident	430, 431, 432.X, 433.X, 434.X, 434.X, 435.X, 436, 437.X, 438.X
	Coronary artery disease	410.X, 411.X, 412, 413.X, 414.X
	Diabetes mellitus	250, 357.2, 362.X, 366.41
	Disorders of adrenal glands	255.X
	Disorders of thyroid gland	240.X-246.X
	Duodenal ulcer	532.X
	Gastric ulcer	531.X
	Gastrojejunal ulcer	534.X
	Hyperlipidemia	272.X
	Hypertension	362.11, 401.X–405.X, 437.2
	Hypoparathyroidism	252.X
	Peptic ulcer	533.X
Yes	Asthma	493.X
	Bronchiectasis	494.X, 496
	Chronic bronchitis	491.X
	Emphysema	492.X
	Empyema	510.X
	Pulmonary tuberculosis	011.X