Dr. Moewardi General Hospital is a fully accredited hospital. Based on the results of a preliminary survey of 10 medical record documents in the Melati ward, 40% are inaccurate documents. This study aims to determine the relationship of coder workload with the accuracy of the diagnosis code in inpatients of the jasmine ward at Dr. Moewardi in 2018.This research is an analytic study with cross sectional approach. The sample in this study were 99 medical records of inpatient Melati ward with proportionate stratified random sampling technique. Data management by collecting, editing, coding, classification, tabulating, analysis and presenting data.The percentage of the workload is low at 60% (59 documents) while the workload is high at 40% (40 documents). Percentage of accuracy of Melati ward code 59% (58 documents) while inaccuracy is 41% (41 documents). The data is processed using the chi square and show that p = 0.01 so that p <0.01.The conclusion drawn is that Ho is rejected and Ha is accepted, meaning that there is a relationship between the workload of the coder and the accuracy of the diagnosis code. The suggestion for hospitals should plan and analyze the workload of the coder in each ward.