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Adding KCD7 code (Korean ICD-10 ) to the OMOP vocabulary

(Seng Chan You) #1

@Christian_Reich @Dymshyts
Korea uses KCD7 code, which is Korean version of ICD-10.
Approximately half of KCD7 codes are included in ICD-10, which are the most commonly used terms. Still, KCD7 has many non-existing codes in ICD-10.

Is it possible to add KCD7 code to the OMOP vocabulary, so every KCD-7 code can have concept_id (even if it’s not standard)? Then, we can store the original KCD7 code as concept_id in condition_source_concept_id field. And it will facilitate official mapping system between KCD7 and SNOMED-CT, ultimately.

(Christian Reich) #2


It most certainly won’t, like any of the other ICD10s.

Well, that’s what needs to happen. Can you send a list of non-ICD10 KCD7 codes, so we can take a look?

(Seng Chan You) #3

Great, I sent you the whole KCD7 code list.
I’ll reorganize the list to subset only non-ICD10 KCD7 codes.

Thank you, @Christian_Reich

(Dmytry Dymshyts) #4

As a first iteration we add the new vocabulary with the mappings that can be easily obtained.
Once we figure out whether we can use
KCD - ICD10CM - SNOMED => KCD - SNOMED way, we’ll add more mappings
and finaly the mappings that would be done from scratch.

Anyway, to add the new vocabulary I need to know
full vocabulary_name, for example for ICD10 it’s “International Classification of Diseases, Tenth Revision (WHO)”
vocabulary_reference , for example for ICD10 it’s “http://www.who.int/classifications/icd/icdonlineversions/en/
vocabulary_version - it is not just KCD 7, I believe it’s revised anualy
latest update - the date when the latest version of KCD7 is released.
please send this over.

(Seng Chan You) #5

I need to dig into this further. But this is what I know now.

Full Vocabulary Name : ‘Korean Classification of Diseases, 7th Revision’
Vocabulary Reference : KCD is updated by STATISTICS KOREA, and released at HIRA (Health Insurance Review and Assessment Service)'s site
Vocabulary version: it’s 7th revision. Statistics Korea updates this on the 5-year base. KCD-8 will be released in 2020. I’m not sure there is a regular schedulre for minor update. I cannot find any other version system for KCD.
Last update: The date of the last update is 2017.7.1., which is available here

(Dmytry Dymshyts) #6

the link opens the site where I can find something like “download vocabulary”, I suppose. Can you please post the link to the actual download both Korean and English if there are separate files.

(Seng Chan You) #7

@Dymshyts, for the latest version, you can download the file here.
But I couldn’t find any dedicated pages for solely KCD code.

(Aelan Park) #8


Evidnet has a KCD7 all list including coded KCD and uncoded KCD.
coded KCD example

uncoded KCD example

We are mapping some of coded KCD and all uncoded KCD now but it is not completed yet.
Please let us know, if you need the list and the mapping results of them.

Aelan Park

(Dmytry Dymshyts) #9

This is what I wanted - the Download link. Thank you!

Do you map them to SNOMED?
If yes, please share, it might be a good contribution for the community.

Uncoded KCDs:
According to WHO ICD10
if there is, let’s say ‘Salmonella Artritis’
there should be combination of 2 codes:
M01.3 Arthritis in other bacterial diseases classified elsewhere
A02.2 Localized salmonella infections
And each of them is mapped to SNOMED, So in CONDITION_OCCURRENCE you end up with two rows - one for ‘Arthritis’, another for ‘Salmonella infection’
I suppose, you want to map all these codes combinations possible, so we’ll have only one row for ‘Salmonella Artritis’ in CONDITION_OCCURRENCE.
Sounds good.

(Aelan Park) #10

Yes, we are mapping KCD7 to SNOMED now, but it’s not completed yet.
If you think fine, we can share them we’ve done first.
Please advise me what is better.

Thank you.