Which of the following is NOT one of the three commonly used systems for filing?

If a patient is seen on October 1, 2013, for a CT scan, which coding manual would the biller use?

a. ICD-10-CM/PCS b. ICD-9-CM c. ICD-9 d. None of the above

Which of the following pressures is considered narrowed?

A. 30 B. 20 C. 20 D. 35