The greatest risk factor for contracting HIV infection is ____. 

During a patient's recovery after a total knee replacement, the 68-year-old man presented to his primary care physician because he had not passed a bowel movement for 3 days, and the patient complained of significant lower abdominal pain

According to the patient's records, the patient had been taking oxycodone. During the expanded problem-focused physical examination performed by the primary care physician, the patient was found to be quite dehydrated, and when asked to get on the exam table, the patient experienced significant orthostatic hypotension and syncope. The primary care physician contacted the North Hills Nursing Home and requested an admission. During the course of the admission, which lasted a good portion of the day with several clinical encounters, the physician collected a comprehensive history, performed a detailed physical examination, and made medical decisions of moderate complexity. Which of the following E/M service codes best reflects the documented service? a. 99221 b. 99305 c. 99310 d. 99215

An initial E/M service is provided in the private residence of an 83-year-old woman who has been discharged from a nursing home. The patient broke her fibula when she fell off a ladder

The clinician collects an extended HPI, a complete ROS, and a complete PFSH, making note of the number of family and friends who passed through the patient's home during the visit. Then the clinician performs a detailed physical examination and medical decision making of moderate complexity. The clinician documents that the patient is "a delightful older woman who laughs frequently and is quite alert, and even gregarious." Which of the following E/M service codes best reflects the documented service? a. 99343 b. 99253 c. 99349 d. 99326