Abstract: Various embodiments herein each include at least one of systems, methods, software, and data structures for semantic graph textual coding. While some embodiments are applicable to coding text of medical records for billing purposes, other embodiments are applicable to coding of any text, regardless to any number of different coding schemes, whether the coding scheme is a defined standard or an ad hoc code for a particular project. One method embodiment includes processing text of a new record to generate at least one concept molecule that represents semantic meaning of the text of the new record and comparing each of the at least one concept molecules to a set of target molecules to identify at least one closest matching target molecule to each of the at least one concept molecules. The method may then store a representation of a closest matching target molecule in association with the new record.