HCPC & CODING
MEDICARE RULES
DENIALS & ADJUSTMENTS
BILLING OPERATIONS
COMPLIANCE
100

The form that is required for Medicare Non-emergency transport. 

What is a Physician Certification Statement (PCS) 

100

Medicare requires this documentation to establish the need for ambulance transport.

What is medical necessity

100

This denial reason often occurs when documentation does not support ambulance necessity.

What is lack of medical necessity?

100

The electronic transaction used for healthcare claim submission.

What is an 837 professional claim

100

Submitting a claim for a higher level of service than the documentation supports.

What is upcoding

200

This code is billed for Advanced Life Support, emergency level 1 transport.

What is A0427

200

 A physician certification statement is often required for these non-emergency repetitive transports.

What are scheduled repetitive transports

200

These adjustment codes explain reductions in payment by insurance.

What are CAS codes?

200

The electronic remittance advice transaction

What is an 835

200

 This document must accurately reflect the patient's condition and the medical necessity for ambulance transport.

What is the Patient Care Report (PCR)

300

This modifier indicates the patient was on hospice.

What is GW

300

Medicare generally covers ambulance transportation only to this type of facility for appropriate treatment. 

What is the nearest appropriate facility

300

 Medicare typically requires beneficiaries to pay this percentage after the Part B deductible is met. 

What is 20% coinsurance

300

 This identifier is required for providers billing Medicare.

What is an NPI (National Provider Identifier)

300

Billing Medicare for ambulance transport when documentation does not support that transportation by other means was contraindicated.

What is billing without medical necessity

400

This code is used when both ground and air mileage are reported

What is A0435

400

The ABN acronym stands for this.

What is an Advance Beneficiary Notice

400

This adjustment code category usually represents contractual obligations

What is CO (Contractual Obligation)

400

This department is responsible for following up on unpaid insurance claims.

What is Accounts Receivable (AR)

400

This federal law prohibits knowingly submitting false or fraudulent claims for payment to Medicare.

What is the False Claims Act?

500

A claim is billed as ALS1 Non-Emergency. The PCR documents oxygen administration that the patient routinely uses at home and no ALS assessment or ALS-level intervention. During review, Medicare reduces payment.

 What is a downcode from ALS to BLS service

500

Medicare's three core requirements for ambulance payment include medical necessity, an appropriate destination, and this third component.

What is a properly documented and furnished ambulance transport service

500

On an 835, a CAS segment contains CO-45 and PR-2 adjustments. Together, these indicate the provider must write off the contractual amount and bill the patient for this remaining balance.

What is the coinsurance amount

500

This journey begins when patient care is documented, continues through claim submission, adjudication, payment or denial, and ends when all balances are resolved.

What is life cycle of a claim

500

 During a Medicare audit, a supplier cannot produce documentation supporting the services billed, even though claims were paid. The organization faces recoupment because it failed to meet this compliance requirement.

What is maintaining complete and accurate documentation