Issue with ICD10 Mapping in New Vocab (February 2025 release)

Vocabulary Users
1

Hello everyone,

As we upgrade to the new vocabulary, we have encountered an issue.

We use the relationship table to map ICD10 non-standard codes to standard codes, and we’ve noticed significant changes in these mappings. For example, the C79.89 ICD10 code was previously mapped to two standard codes—one SNOMED and one Cancer Modifier. However, in the new vocabulary, this code is now mapped only to a Cancer Modifier in the Measurement domain, which doesn’t seem appropriate.

Could you please provide guidance on this? I truly appreciate your help!

Thanks!

Previous Mapping

SOURCE_CODE TARGET_CODE TARGET_CONCEPT_ID TARGET_VOCABULARY_ID TARGET_DOMAIN_ID
C79.89 OMOP4998856 36769180 Cancer Modifier Measurement
C79.89 128462008 432851 SNOMED Condition

Current Mapping

SOURCE_CODE TARGET_CODE TARGET_CONCEPT_ID TARGET_VOCABULARY_ID TARGET_DOMAIN_ID
C79.89 OMOP4998856 36769180 Cancer Modifier Measurement

Tagging @aostropolets, @cukarthik, @hiro-mishima

2

It is correct. That code stands for Secondary malignant neoplasm of other specified sites. As a generic (and rather clumsy) way to describe a metastasis it is not a diagnosis, but a modifier to a primary tumor.

All metastases are now mapped to Cancer Modifiers only. Can’t have a met without a cancer.

1 Like
3

Thanks, @Christian_Reich!