M codes are optional ICD-9-CM codes that identify the tissue type and behavior of neoplasms.

Which component of the bone matrix gives bone its tensile strength?

a. Calcium b. Phosphate c. Collagen d. Magnesium

Which of the following are necessary to validate a claim of professional negligence?

1. The practitioner owed a duty to the patient. 2. The practitioner was derelict with that duty. 3. The breach of duty was the direct cause of damages. 4. Damage or harm came to the patient. a. 1, 2, 3, and 4 b. 2, 3, and 4 only c. 2 and 3 only d. 3 and 4 only