Background Clinical trials are known as the most valid medical research. It is able to promote medical evidences on prevention, diagnosis, screening, treatment, and quality of life because in this type of study, an intervention is intentionally performed on subjects. Therefore, it encompasses ethical concerns and considerations, especially when human subjects are studied. In other words, clinic...

The Current Procedural Terminology of the American Medical Association has recently introduced coding changes for myelography with the introduction of new bundled codes. The aim of this review was to help neuroradiologists understand these code changes and their unintended consequences and to discuss various scenarios in which permutations of various codes could occur in clinical practice.

BACKGROUND The UK's NHS intends to move from the current Read code system to the international, detailed Systematized Nomenclature of Medicine Clinical Terms (SNOMED-CT) to facilitate more clinically appropriate coding of conditions and associated risk factors and outcomes. Given concerns about coding behaviour of general practitioners, we sought to study the current coding patterns in allergie...