Medical coding is an essential step in hospital revenue cycle. Medical coders perform the task of assigning for each patient visit, one or more codes from the international standard of medical coding systems such as ICD for diagnosis or CPT for procedure. This task is performed based on manually reviewing the discharge notes and other information from patient records to assign the medical codes.  Medical language modeling enables several applications for medical coding which range from automated coding, to code recommendation and quality control for coding. We aim to develop systems and tool to assist the medical coding task with AI technology.