General coding standards
Acute and chronic conditions
When both an acute and a chronic form of the same condition are documented and separate codes exist, both are assigned.
What this means in practice
- Sequence the acute form first when it is the reason for the encounter.
- Where the classification provides a single combination code covering both, use it instead of two codes.
- Acute kidney injury superimposed on chronic kidney disease is the canonical example - both are coded.
Where the explorer applies it
inflammatorydegenerative
Source and licensing.
Summaries below are original text written for this product and point to the named CIHI standard; they are not a reproduction of it. CIHI content may be reproduced unaltered for non-commercial purposes with attribution - commercial reproduction requires CIHI's prior written authorization.
Canadian Institute for Health Information. Canadian Coding Standards for Version 2022 ICD-10-CA and CCI. Ottawa, ON: CIHI; 2022. CIHI codes and classifications
Canadian Institute for Health Information. Canadian Coding Standards for Version 2022 ICD-10-CA and CCI. Ottawa, ON: CIHI; 2022. CIHI codes and classifications