Tissue: A group or layer of cells that perform specific functions. For example, muscle tissue is a group of muscle cells.issue: A group or layer of cells that perform specific functions. For example, muscle tissue is a group of muscle cells.
1 The skin is a barrier to the outside world protecting the body from infection, radiation, and extremes of temperature.  There are many types of wounds that can damage the skin including abrasions, lacerations, rupture injuries, punctures, and penetrating wounds.
A simple laceration repair includes trimming or removing fatty tissue and cleaning the wound, says Mandy Storman, RHIT, CPC, a coding consultant for Health Information Services at Eastern Maine Medical Center in Bangor, Maine.