CPT Coding, Billing, and Documentation — E/M Codes, Modifiers, the 8-Minute Rule, and IRF Requirements

A 58-year-old established patient with chronic low back pain returns to your outpatient clinic for follow-up. She reports a new right L5 radiculopathy that began 10 days ago and also complains of a flare-up of her pre-existing right knee osteoarthritis.