If, after careful study, a physician determines a patientâs underlying cause of chest pain to be angina and the patient has a documented history of CAD, then CAD will be sequenced as the principal diagnosis followed by the appropriate code for the angina (AHA Coding Clinic for ICD-9-CM, 2001, third quarter, page 15).
Not all functions of the hemispheres are shared. In general, the left hemisphere controls speech, comprehension, arithmetic, and writing. The right hemisphere controls creativity, spatial ability, artistic, and musical skills. The left hemisphere is dominant in hand use and language in about 92% of people.
The brain is divided into: 1  Cerebrum-the largest part of the brain. 2  Cerebral cortex-the outside of the cerebrum. 3  Cerebellum-lies below the cerebrum at the back of the skull. 4  Medulla-controls heart rate, breathing, swallowing, coughing and vomiting. Cerebrum-the largest part of the brain. 2  It is the centre for thought and intelligence. 3  It is divided into right and left hemispheres. 4  The right controls movement and activities on the left side of the body.