6. The system of claim 5 , wherein the alphanumeric indication comprises a matrix of potential matches between codes from the first code scheme and codes from the second code scheme.
5. A system for mapping of medical code schemes, said system comprising a processor to implement: a code analyzer to process a plurality of coded concepts to determine a potential match between a code from a first code scheme in the plurality of coded concepts and a code from a second code scheme in the plurality of coded concepts and to assign a probability to each potential match of a code from the first code scheme and a code from the second code scheme, the code analyzer to generate an alphanumeric indication of the probability of each potential match between the first code scheme and the second code scheme from the plurality of coded concepts and to generate a graphical representation of the plurality of coded concepts; and a user interface to output the alphanumeric and the graphical representation to a user and to accept user input to select a match between the first code scheme and the second code scheme; wherein, for the first code scheme and the second code scheme, each code in the first scheme represents a row and each code in the second code scheme represent a column in the matrix such that the probability that a code in the first code scheme is the same as a code in the second code scheme is represented by a cell value at a corresponding matrix position row and column position; wherein the graphical representation comprises a heat map highlighting tight correlation and clustering of coded concepts in relation to probability of each potential match; wherein the heat map and the alphanumeric indication facilitate bulk matching of coded concepts among a plurality of code schemes based at least in part on concept clustering and visual distinction between clusters of concepts and one-to-one mappings.