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Crohn's vs Diverticulosis

In review data associated to 201606-Crohn's disease @rmakadia and @Jill_Hardin noticed a huge increase in patients in Oct 2015 in our claims data sets. This of course is the exact month/day that most of our database converted from ICD9 to ICD10.

In investigating the codes associated to it and its’ descendants we noticed that the increase patient count was mostly due to codes falling under K57-Diverticular disease of intestine.

[Question 1]
Could someone give an opinion on if this Crohn’s/Diverticulosis relationship is appropriate? I can see why they might get entangled but is there no better home in the SNOMED Vocabulary?

Example:
K57.30-Diverticulosis of large intestine without perforation or abscess without bleeding

Maps To

201606-Crohn's disease

[Question 2]
However there also seem to be some ICD10s that do not map in the similar pattern seen above.

K57.20-Diverticulitis of large intestine with perforation and abscess without bleeding

Maps To Both

46269838 Abscess of intestine co-occurrent and due to chronic ulcerative pancolitis
46269951 Abscess of intestine co-occurrent and due to ulcerative colitis

Neither of which are children of 201606-Crohn's disease.

@ericaVoss>

No, neither diverticulosis (invaginations of the colon wall) nor diverticulitis (infection of that thing) is Crohn’s disease or ulcerative colitis. Will have to do a hotfix.

@Christian_Reich looking at 201606-Crohn's disease these are all the ICD10CMs that are attached to it and its children under K57:

Id	Code	Name
45586725	K57.30	Diverticulosis of large intestine without perforation or abscess without bleeding
45552938	K57.33	Diverticulitis of large intestine without perforation or abscess with bleeding
45557661	K57.41	Diverticulitis of both small and large intestine with perforation and abscess with bleeding
45572217	K57.50	Diverticulosis of both small and large intestine without perforation or abscess without bleeding
45552939	K57.51	Diverticulosis of both small and large intestine without perforation or abscess with bleeding
45567317	K57.52	Diverticulitis of both small and large intestine without perforation or abscess without bleeding
45605946	K57.53	Diverticulitis of both small and large intestine without perforation or abscess with bleeding

Logged as an issue:

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