Chapter II - Neoplasms
Primary and secondary neoplasms
Distinguishing a primary site from a metastatic deposit is the central decision in neoplasm coding.
What this means in practice
- Code the primary site and each secondary site separately. A liver lesion is far more often a secondary deposit (C78.7) than a primary hepatocellular carcinoma (C22.0) - the pathology report decides.
- Multiple independent primaries each receive their own code; a neoplasm extending into adjacent tissue does not.
- Where a lesion overlaps contiguous subsites and the origin cannot be determined, use the .8 overlapping-lesion code.
Where the explorer applies it
neoplasm
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Source, copyright and permitted use.
This service indexes and cites the Canadian Coding Standards; it does not reproduce them. The summaries here are original text written for this product. The authoritative wording is CIHI's publication, and where the two differ the publication governs.
Canadian Institute for Health Information. Canadian Coding Standards for Version 2022 ICD-10-CA and CCI. Ottawa, ON: CIHI; 2022.
CIHI permits reproduction of its publications unaltered, in whole or in part, solely for non-commercial purposes with full acknowledgement of CIHI as copyright owner. Any reproduction or use for a commercial purpose requires CIHI's prior written authorization. Reproduction or use suggesting endorsement by, or affiliation with, CIHI is prohibited — Advanced Management Solutions is not affiliated with or endorsed by CIHI.
Production of the source publication was made possible by financial contributions from Health Canada and provincial and territorial governments. The views expressed in it do not necessarily represent the views of Health Canada or of any provincial or territorial government.
CIHI codes and classifications · All attributions & third-party rights
Canadian Institute for Health Information. Canadian Coding Standards for Version 2022 ICD-10-CA and CCI. Ottawa, ON: CIHI; 2022.
CIHI permits reproduction of its publications unaltered, in whole or in part, solely for non-commercial purposes with full acknowledgement of CIHI as copyright owner. Any reproduction or use for a commercial purpose requires CIHI's prior written authorization. Reproduction or use suggesting endorsement by, or affiliation with, CIHI is prohibited — Advanced Management Solutions is not affiliated with or endorsed by CIHI.
Production of the source publication was made possible by financial contributions from Health Canada and provincial and territorial governments. The views expressed in it do not necessarily represent the views of Health Canada or of any provincial or territorial government.
CIHI codes and classifications · All attributions & third-party rights