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Operations

Add-On

Definition
Additional billable services or line items added to the base rate of a trip. Common add-ons include oxygen tank handling, extra attendants, or bariatric support.

Overview

Why it Matters

Base rates often barely cover costs. Add-ons are where the margin exists.

How it Works

A provider bills A0130 (Base) + A0422 (Oxygen).

Code Comparison

Comparison: Add-On vs. Modifier

Modifier: Changes the description of the trip (Origin/Dest).

Add-On: A separate charge for extra equipment/people.

Common Questions

  • Unapproved Add-ons: Billing for "Stairs Assistance" when the contract doesn't pay for it.
  • Check the "Fee Schedule" to see exactly which add-ons are reimbursable.

Sources

HCPCS Ancillary Codes