The International Classification of Diseases, ninth edition (ICD-9) and the ICD, 10th edition, Canadian enhancement (ICD-10-CA) comorbidity codes

Condition	Code	ICD-9 Definition	Code	ICD-10-CA Definition
Colon cancer	153.x	Malignant neoplasm of colon	C18	Malignant neoplasm of colon
Rectal cancer	154.x	Malignant neoplasm of rectum, rectosigmoid junction and anus	C19	Malignant neoplasm of rectosigmoid junction
			C20	Malignant neoplasm of rectum
			C21	Malignant neoplasm of anus and anal canal
Non-Hodgkin’s lymphoma	200.8	Other named variants	C83.2	Mixed small and large cell (diffuse) Non-Hodgkin’s lymphoma
	200	Reticulosarcoma	C83.3	Large cell (diffuse) Non-Hodgkin’s lymphoma (includes recticulum cell sarcoma)
	200.8	Other named variants	C83.4	Immunoblastic (diffuse) Non-Hodgkin’s lymphoma
	200.1	Lymphosarcoma (excludes lymphosarcoma cell leukemia)	C83.5	Lymphoblastic (diffuse) Non-Hodgkin’s lymphoma
	200.2	Burkitt’s tumour	C83.7	Burkitt’s tumour
	200.8	Other named variants	C88.08	Other lymphoplasmacytic lymphoma
	200	Reticulosarcoma	C96.3	True histiocytic lymphoma
Hodgkin’s disease	201.x	Hodgkin’s disease	C81	Hodgkin’s disease
Pulmonary embolism	415.x	Acute pulmonary heart disease	I26	Pulmonary embolism
Deep venous thromboembolism	451	Phlebitis and thrombophlebitis	I80	Phlebitis and thrombophlebitis
	452	Portal vein thrombosis (Includes portal [vein] obstruction. Excludes phlebitis of portal vein)	I81	Portal vein thrombosis (Includes portal [vein] obstruction. Excludes phlebitis of portal vein)
	453	Other venous embolism and thrombosis	I82	Other venous embolism and thrombosis
	454	Varicose veins of lower extremities	I83	Varicose veins of lower extremities