A0420 Ambulance waiting time (als or bls), one half (1/2) hour increments

Short descriptor: Ambulance waiting 1/2 hr

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A0420 is the HCPCS Level II code for Ambulance waiting time (als or bls), one half (1/2) hour increments (2026). It belongs to Section A — Transportation, Medical & Surgical Supplies. Under Medicare, its coverage status is: Not payable by Medicare. Part B pricing methodology: Not separately priced by Part B.

Classification & CMS Attributes

Medicare Coverage
Not payable by Medicare (code I)
Part B Pricing
Not separately priced by Part B (indicator 00)
Type of Service
Ambulance
Effective Date
2014-01-01
2026 Maintenance
No change this year

References

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Reference A0420 with the canonical source and edition:

A0420 — Ambulance waiting time (als or bls), one half (1/2) hour increments. ICD-10 Coding Pro (HCPCS Level II 2026). https://icd10codingpro.com/hcpcs-codes/A0420

Canonical URL: https://icd10codingpro.com/hcpcs-codes/A0420

Related Codes in Section A

← A0398 Als routine disposble suppls A0422 → Ambulance 02 life sustaining
A0392 Als defibrillation supplies A0394 Als iv drug therapy supplies A0396 Als esophageal intub suppls A0398 Als routine disposble suppls A0422 Ambulance 02 life sustaining A0424 Extra ambulance attendant A0425 Ground mileage A0426 Als 1 A0427 Als1-emergency A0428 Bls
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2026-01-01

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