Headgear is used with a ____________

The key factor to distinguish relative and absolute polycythemia is that a relative polycythemia is caused by:

a. Increased production of erythrocytes b. Decreased amount of serum c. Increased production of erythropoietin d. Decreased arterial oxygen saturation

Physician services that are more intense than the work of other evaluation and management (E/M) services and that involve frequent personal assessment by the physician would be coded as:

consultation. critical care. subsequent care. initial hospital care.