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Canadian Hospital Clinical Documentation 2026 — ICD-10-CA, CCI & Case Mix Guide
Complete guide to Canadian hospital clinical documentation — ICD-10-CA coding, Canadian Classification of Interventions (CCI), Case Mix Group (CMG), CIHI DAD reporting, clinical documentation improvement (CDI), and documentation software.
ICD-10-CA and CCI are the Canadian clinical coding systems. CMG drives activity-based funding. CIHI DAD is the national discharge database. This guide covers Canadian clinical documentation.
Coding and Documentation Workflow
- Clinical documentation: Doctor documents admission, diagnoses, procedures, complications
- Concurrent review: CDI specialist reviews documentation during admission
- Clinician query: CDI specialist queries clinician for clarification if needed
- Coding: Clinical coder assigns ICD-10-CA and CCI codes after discharge
- CMG assignment: CMG assigned based on codes
- DAD submission: Submit DAD data to CIHI
- Audit: Coding audit for accuracy and compliance
- Funding: ABF funding based on CMG (some provinces)
CDI Key Focus Areas
| Area | Documentation Issue | Impact |
|---|---|---|
| Principal diagnosis | Incorrect principal diagnosis | Wrong CMG, wrong funding |
| Comorbidities | Undocumented comorbidities | Lower CMG weight, less funding |
| Complications | Undocumented complications | Lower CMG weight, less funding |
| Procedure specificity | Non-specific procedure code | Wrong CMG, wrong funding |
| Severity | Undocumented severity | Lower CMG weight, less funding |
Frequently Asked Questions
- What is ICD-10-CA and CCI?
- ICD-10-CA (International Classification of Diseases, 10th Revision, Canadian Enhancement) is the Canadian clinical coding system for diagnoses. CCI (Canadian Classification of Interventions) is the coding system for procedures. All Canadian hospital admissions are coded using ICD-10-CA and CCI. Codes are used for CMG assignment, CIHI DAD reporting, and case costing.
- What is CMG and how does it affect funding?
- CMG (Case Mix Group) classifies hospital admissions into groups based on diagnosis and procedures. Each CMG has a weight that determines funding relative to other groups. Some provinces use CMG for activity-based funding (ABF). CMG+ is the current version. Accurate coding and documentation directly affect hospital funding in provinces with ABF.
- What is CIHI DAD?
- CIHI DAD (Discharge Abstract Database) is the national database of all Canadian hospital discharges. DAD includes: 1) Demographics, 2. Diagnoses (ICD-10-CA), 3. Procedures (CCI), 4. LOS, 5. Discharge disposition, 6. Case costing (for participating hospitals). All Canadian acute care hospitals submit DAD data to CIHI. DAD is used for national reporting and benchmarking.