When should updates to the ICD-9-CM and ICD-10-CM coding manuals typically take effect?

Updates to the ICD-9-CM and ICD-10-CM coding manuals typically take effect in October. This timing aligns with the annual updates that are made to the International Classification of Diseases (ICD) systems, which include changes in codes, guidelines, and instructions. The October implementation date allows healthcare providers, coders, and other stakeholders adequate time to prepare for the upcoming changes that will be reflected in the coding manuals.

The annual updates are particularly important in reflecting new medical knowledge, changes in medical technology, and alterations in treatment protocols. By establishing a set update month, such as October, there is a standardized schedule that all healthcare organizations across the United States can follow, ensuring consistency in coding practices in the months leading up to and following the implementation of new or revised codes.