For example, a certain maize variety grown in a cool climate will need less water per day than the same maize variety grown in a hotter climate. It is therefore useful to take a certain standard crop or reference crop and determine how much water this crop needs per day in the various climatic regions.
An implantable cardioverter defibrillator (ICD) looks very similar to a pacemaker, except that it is slightly larger. It has a generator, one or more leads, and an electrode for each lead. These components work very much like a pacemaker.
Simply put, the difference between CPT codes and ICD codes are that CPT codes are related to procedures and ICD codes are related to diagnoses. CPT codes, or procedural codes, describe what kind of procedure a patient has received while ICD codes, or diagnostic codes, describe any diseases, illnesses or injuries a patient may have.