Vitamin D, a Missing ABN, and a Bill Sent to the Patient
A 52-year-old Medicare patient comes to the hospital outpatient laboratory with orders for a 25-hydroxy vitamin D test (CPT 82306) and a lipid panel, placed during a wellness visit. The only diagnosis on the order is 'fatigue, R53.83.' The hospital's coverage review shows 82306 is covered for chronic kidney disease, osteoporosis/osteopenia, malabsorption, and a short list of other conditions - not for fatigue alone. The patient asks at registration whether she will owe anything. The clerk tells her 'it's all covered,' the specimen is drawn, and no notice of any kind is signed. Two months later the MAC denies 82306 as not medically necessary, and the hospital bills the patient $84. She calls to complain and states that no one ever told her she might have to pay.
1. Was an ABN required, and what would a valid one have changed?
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Yes - an ABN was required. An ABN is used when the hospital believes Medicare may deny an item or service as not reasonable and necessary. A test whose only documented indication falls outside coverage criteria is exactly that situation.
A valid ABN must be:
- Given before the service is furnished, in writing on the standard form.
- Voluntary - never a condition of receiving care, and never presented as a formality.
- Specific: it identifies the item or service, states the reason Medicare may deny it, and gives a good-faith estimate of the cost.
- Signed by the patient (or representative) after the options are explained, including the option to refuse.
What it changes: with a properly executed ABN, the hospital may bill the beneficiary after the denial. Without one, the hospital is held harmless and must absorb the charge. The clerk's oral assurance 'it's all covered' does not substitute for an ABN, and it does not shift liability to the patient.
2. What should have happened before the specimen was drawn?
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A short, documented sequence:
- Check coverage criteria for 82306 against the diagnosis on the order.
- Contact the ordering physician's office to ask whether a covered indication exists and is documented in the record. If, for example, the patient has documented chronic kidney disease, that diagnosis should be added - but only if it is clinically true and supported.
- Never invent or pad a covered diagnosis to get the test paid. Adding a diagnosis the physician cannot support is a coding-integrity violation and can convert a routine denial into a false-claims exposure.
- If no covered indication exists, issue the ABN, explain the likely denial and estimated cost, let the patient decide, and document the conversation.
- Complete the lipid panel normally - that portion is not in question and does not need an ABN.
The failure here happened at registration, before any coding: the patient was given a blanket assurance instead of a notice and a choice.
3. Can the hospital bill the patient now? What are the operational and compliance consequences?
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No. In the absence of a valid, timely ABN, the hospital cannot shift the denied charge to a Medicare beneficiary. The $84 bill should be reversed, the account adjusted to a write-off, and any payment already received refunded.
Why the 'it's all covered' statement matters:
- It is evidence that the patient was misled, which supports a beneficiary complaint and, if repeated, a pattern finding in a MAC or OIG review.
- Billing a beneficiary for a service the hospital is prohibited from charging can implicate the provider agreement and, in egregious patterns, false-claims theories.
Operational fixes to prevent recurrence:
- Build a hard stop at order entry for tests with published coverage limits.
- Train registration staff that they may not guarantee coverage and must route uncertain orders to the coverage-review desk.
- Audit a sample of high-risk laboratory codes monthly, tracking denial rate, ABN rate, and patient-billed amounts.
- Keep ABNs retrievable by account; an ABN that cannot be produced on audit is treated as never having existed.