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.
a) Neuroscience perspective. 1  The cerebrum has 2 parts: the right cerebral hemisphere and the left cerebral hemisphere. 2  The part of the brain that is responsible for complex thinking is the Frontal LobeâLocated under the forehead, the frontal lobe controls reasoning, planning, voluntary movement, and some aspects of speech. The prefrontal cortex is the part of the frontal lobe right behind the forehead.