CCS-Ps are coding practitioners who: 1  Specialize in physician-based settings such as physician offices, group practices, multi-specialty clinics, or specialty centers. 2  Review patient records and assign numeric codes for each diagnosis and procedure.
For the endothelium of the cornea, see corneal endothelium. Endothelium is a type of epithelium that lines the interior surface of blood vessels and lymphatic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall.It is a thin layer of simple squamous cells called endothelial cells.hese functions include fluid filtration, such as in the glomeruli of the kidney, blood vessel tone, hemostasis, neutrophil recruitment, and hormone trafficking. Endothelium of the interior surfaces of the heart chambers is called endocardium.
The endothelial cells that make up the endothelium are a single layer of cells. This single sheet of endothelium is so thin that molecules of water and oxygen can easily penetrate the layer and access the surrounding tissue. Also, the endothelial cells lack a tightly packed epithelial morphology. They are spaced by intercellular clefts that allow passage of fluids and diffusion of substances. The epithelial cells that form the epithelium provide multiple layers of protection from the outside environment.