CPT codes are organized in sections as follows:

• Evaluation and Management – 99201 through 99499
• Anesthesia – 00100 through 01999
• Surgery – 10021 through 69990
• Radiology – 70010 through 79999
• Pathology and Laboratory – 80048 through 89399
• Medicine – 90281 through 99199

E/M Most Frequently Used

The Evaluation and Management codes, 99201 through 99499 are used by all specialties and facilities. These are listed first because they are the most commonly used. It’s very important that these codes are accurately assigned because the majority of a practices income is based on these procedures.

The majority of E/M CPT medical billing codes require the provider to obtain information from the patient to access the necessary medical care. As such the E/M services are not significant procedures, but are important in determining the other procedures the patient needs.