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. 2014 Nov 14;2014:564–572.

Table 1.

Coverage of rare diseases in the three terminologies.

UMLS-identified match Map-identified match (found) Map-identified match (projected)
ICD-9-CM 697 (11%) 2055 (32%) 2569 (39%)
ICD-10-CM 1386 (21%) 919 (14%) 1635 (25%)
SNOMED CT 2848 (44%) n/a n/a