E0784: External ambulatory infusion pump, insulin
E0784 is a HCPCS Level II code for external ambulatory infusion pump, insulin. It belongs to the Durable Medical Equipment section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q4-Oct. This states Medicare’s position on the code, not on your particular claim.
Medically Unlikely Edits: units per day
The most units of E0784 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0, never payable MAI 3: Date of Service Edit: Clinical · CMS Policy
- outpatient
- 0, never payable MAI 3: Date of Service Edit: Clinical · CMS Policy
- DME supplier
- 1 unit MAI 2: Date of Service Edit: Policy · Code Descriptor / CPT Instruction
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute, no documentation overrides it. CMS MUE 2026Q4.
The CMS record for E0784
- Long descriptor
- External ambulatory infusion pump, insulin
- Short descriptor
- Ext amb infusn pump insulin
- Added
- January 1, 1996
- BETOS
- D1E
- Pricing indicator
- 36: DMEPOS
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service: CMS's own analytic grouping.
Capped rental DME. Price subject to floors and ceilings.
Codes adjacent to E0784
HCPCS has no hierarchy: related items simply sit next to each other in the numbering. If E0784 is not quite right, the correct code is very often within a few positions of it.
- E0769Electrical stimulation or electromagnetic wound treatment device, not otherwise classified
- E0770Functional electrical stimulator, transcutaneous stimulation of nerve and/or muscle groups, any type, complete system, not otherwise specified
- E0776Iv pole
- E0779Ambulatory infusion pump, mechanical, reusable, for infusion 8 hours or greater
- E0780Ambulatory infusion pump, mechanical, reusable, for infusion less than 8 hours
- E0781Ambulatory infusion pump, single or multiple channels, electric or battery operated, with administrative equipment, worn by patient
- E0782Infusion pump, implantable, non-programmable (includes all components, e.g., pump, catheter, connectors, etc.)
- E0783Infusion pump system, implantable, programmable (includes all components, e.g., pump, catheter, connectors, etc.)
- E0785Implantable intraspinal (epidural/intrathecal) catheter used with implantable infusion pump, replacement
- E0786Implantable programmable infusion pump, replacement (excludes implantable intraspinal catheter)
- E0787External ambulatory infusion pump, insulin, dosage rate adjustment using therapeutic continuous glucose sensing
- E0788Ambulatory infusion pump, specific device-drug combination, single or multiple channels, electric or battery operated, with administrative equipment, worn by patient
- E0791Parenteral infusion pump, stationary, single or multi-channel
- E0830Ambulatory traction device, all types, each
- E0840Traction frame, attached to headboard, cervical traction
- E0849Traction equipment, cervical, free-standing stand/frame, pneumatic, applying traction force to other than mandible