## Common ground
All options refer to devices that deliver fluids (like medication) into a patient’s body in a controlled manner.
## Options at a glance
**8413.19 – Infusion pumps as pumps**
- **Defining trait:** Designed primarily as mechanical fluid delivery systems, regardless of medical use.
- **Typical examples:** Portable syringe pumps, peristaltic pump units used in labs or clinics.
- **Best fit when:** The device functions as a general-purpose pump with medical application being secondary.
**9018.90 – Infusion pumps as medical apparatus**
- **Defining trait:** Intended for medical use and classified under medical devices, not just fluid delivery.
- **Typical examples:** Hospital-grade infusion pumps used in IV therapy, with safety features like air-in-line detection.
- **Best fit when:** The device is designed specifically for clinical patient care and meets medical device standards.
**9021.90 – Implantable infusion pumps**
- **Defining trait:** Designed to be surgically implanted inside the body for long-term use.
- **Typical examples:** Insulin pumps for diabetes, pain management pumps (e.g., intrathecal).
- **Best fit when:** The pump is permanently or semi-permanently placed within the patient’s body.
## Key differences
| Feature | 8413.19 (Pumps) | 9018.90 (Medical apparatus) | 9021.90 (Implantable) |
|-----------------------|------------------------|-------------------------------|----------------------------|
| Primary function | Fluid delivery | Medical treatment | Long-term internal use |
| Implantation required?| No | No | Yes |
| Regulatory classification | General machinery | Medical device | Implantable medical device |
## How to choose
- Is the pump designed for surgical implantation into the body? → 9021.90
- Does it serve a clinical medical purpose with safety and monitoring features? → 9018.90
- Is it used primarily as a mechanical pump, even if applied in medicine? → 8413.19
## Overlaps & pitfalls
A device may qualify under both 9018.90 and 9021.90 if it’s implantable *and* medical (e.g., an implanted insulin pump). In such cases, **9021.90 takes priority** due to its specificity. If the product is not clearly implantable but used in healthcare, avoid 8413.19 unless it lacks medical design features. The key is whether the device’s **main function** is medical treatment or general fluid delivery