Gonorrhea is an STD caused by a:

Which of the following reference electrodes does the PCO2 system use?

A) calomel electrode B) Clark electrode C) Severinghaus electrode D) silver/silver chloride electrode

When mental retardation occurs as a result of an injury, what should the coder do?

A) Code only the injury. B) Code only the mental retardation. C) Code the mental retardation and any additional diagnosis to reflect the associated conditions. D) Select the code for unspecified mental retardation.