- 2010 HCPCS A0420
- Ambulance waiting time (als or bls), one half (1/2) hour increments
- This is the 2010 version of HCPCS A0420 - please refer to the 2016 HCPCS code set for the latest version.
- Added on Sunday, January 01, 1995
- Status changed on Sunday, January 01, 1995 to: No maintenance for this code
- BETOS Classification: Ambulance
- Medicare coverage status: Carrier judgment
A0398 A0422 
