Skip to main content
. Author manuscript; available in PMC: 2017 Jul 17.
Published in final edited form as: IEEE EMBS Int Conf Biomed Health Inform. 2017 Apr 13;2017:493–496. doi: 10.1109/BHI.2017.7897313

Fig. 5.

Fig. 5

We give an abbreviated closure table for the ICD9/ICD10 concepts corresponding to diabetes; ICD9 codes (orange boxes) and ICD10 codes (blue boxes) appear as two children of the diagnoses node, which are not connected by definition. The solid red arrow is taken directly from the GEMs and bridges ICD9 and ICD10 at a leaf node; the dotted red arrows are indirect links from the closure table structure. At this point, the ICD10CM:E1129 concept is considered part of the ICD9CM tree as a direct descendant of ICD9CM:25040, an indirect descendant of ICD9:250, and so on. The reverse holds true when an ICD9 concept is treated as a descendant of its ICD10 equivalent.