Top services include upper airway endoscopy and nerve injections.
The table below shows the top 30 ambulatory payment classifications in the United States in 2013 based on total outpatient services. The Centers for Medicare and Medicaid services released the data Monday as part of a push to make the costs for these treatments more transparent. The data only includes treatments billed in a fee for service model and not part of any value based purchasing model.
| Ambulatory payment classifiction | Outpatient services | Average estimated submitted charges | Average total payments |
| 0074 – Level IV Endoscopy Upper Airway | 16,814 | $6,814.22 | $1,457.88 |
| 0203 – Level IV Nerve Injections | 6,467 | $3,822.92 | $838.25 |
| 0209 – Level II Extended EEG, Sleep, and Cardiovascular Studies | 340,207 | $3,701.58 | $759.72 |
| 0377 – Level II Cardiac Imaging | 666,568 | $4,413.38 | $738.38 |
| 0020 – Level II Excision/ Biopsy | 40,610 | $3,197.64 | $570.80 |
| 0270 – Level III Echocardiogram Without Contrast | 75,527 | $2,819.66 | $560.61 |
| 0207 – Level III Nerve Injections | 506,532 | $2,298.40 | $499.52 |
| 0269 – Level II Echocardiogram Without Contrast | 1,367,105 | $1,960.99 | $396.95 |
| 0336 – Magnetic Resonance Imaging and Magnetic Resonance Angiography without Contrast | 1,145,911 | $2,620.92 | $346.01 |
| 0019 – Level I Excision/ Biopsy | 28,162 | $1,982.16 | $328.51 |
| 0073 – Level III Endoscopy Upper Airway | 8,910 | $904.15 | $298.98 |
| 0206 – Level II Nerve Injections | 44,844 | $1,181.11 | $258.22 |
| 0369 – Level III Pulmonary Tests | 12,320 | $1,004.96 | $208.02 |
| 0608 – Level 5 Hospital Clinic Visits | 76,297 | $365.16 | $179.65 |
| 0204 – Level I Nerve Injections | 283,978 | $723.57 | $178.10 |
| 0267 – Level III Diagnostic and Screening Ultrasound | 1,238,288 | $1,075.89 | $151.94 |
| 0607 – Level 4 Hospital Clinic Visits | 723,188 | $268.88 | $132.95 |
| 0692 – Level II Electronic Analysis of Devices | 34,690 | $647.59 | $109.85 |
| 0096 – Level II Noninvasive Physiologic Studies | 214,768 | $754.29 | $104.62 |
| 0606 – Level 3 Hospital Clinic Visits | 3,160,681 | $186.97 | $102.18 |
| 0078 – Level III Pulmonary Treatment | 227,276 | $548.55 | $97.89 |
| 0015 – Level III Debridement & Destruction | 507,955 | $331.91 | $97.74 |
| 0605 – Level 2 Hospital Clinic Visits | 8,200,152 | $147.56 | $76.19 |
| 0698 – Level II Eye Tests & Treatments | 155,492 | $208.31 | $69.08 |
| 0265 – Level I Diagnostic and Screening Ultrasound | 528,137 | $496.37 | $62.62 |
| 0368 – Level II Pulmonary Tests | 616,149 | $311.13 | $59.50 |
| 0013 – Level II Debridement & Destruction | 437,631 | $198.54 | $56.75 |
| 0604 – Level 1 Hospital Clinic Visits | 4,190,275 | $107.77 | $53.42 |
| 0690 – Level I Electronic Analysis of Devices | 626,414 | $173.31 | $35.35 |
| 0012 – Level I Debridement & Destruction | 273,919 | $74.89 | $16.08 |