This group consists of patients with Canadian Classification
System (CCS) class I or II angina; New York Heart Association (NYHA) class I or II heart failure; mild to moderate valve disease; previous myocardial infarction; successful coronary revascularization; most types of congenital heart disease; and ability to achieve [greater than or equal to]3-5 METs during exercise stress testing without angina, ischemic electrocardiographic changes, hypotension, cyanosis, arrhythmia, or excessive dyspnea.
 Information CIfH, "Canadian Classification of Health Interventions," 2015, pp.
Codes for liver transplantation, hepatic resection (segmental or subtotal), ablation, and embolization with or without chemotherapy or transarterial radiation were selected from the Canadian Classification of Health Interventions manual .
These records were identified using either specific Canadian Classification
of Diagnostic, Therapeutic, and Surgical Procedures (CCP) codes which correspond to the 9th revision of the International Classification of Disease (ICD-9), or Canadian Classification
of Health Interventions (CCI) procedure codes, which correspond to the ICD-10.
CCI refers to the Canadian Classification
of Health Interventions, developed to accompany ICD-10-CA.
In the case of the Canadian Classification
and Dictionary of Occupations (CCDO) from the 1970s, the broad groups were criticized for being multi-dimensional and heterogeneous.
To consolidate the original 49 occupations into 36, we combined occupations having few observations with other occupations within the same major Canadian Classification
and Dictionary of Occupation (CCDO) groupings.
Canada's federal, provincial and territorial governments created CIHI in 1994 as a not-for-profit, independent organization dedicated to forging a common approach to Canadian health information.[sup.10] The proportion (in percentage) of laser modalities among the total number of transurethral procedures overall, was calculated based on the Canadian Classification of Health Intervention (CCI) code for the procedures.
A limitation of this study is that Canadian Classification of Health Intervention (CCI) codes do not distinguish among procedures other than TURP and laser.