Drug Unit Errors
Units billed from the order rather than the dose actually administered.
The fixReconcile every drug claim against the administration record before submission.
Drug spend protected, administration hierarchy billed correctly
In oncology the drug is the business. A single regimen can cost more than a week of clinic visits, so one units error or one missed authorisation wipes out the margin on that patient entirely. We verify every drug unit against the administration record, bill the infusion hierarchy in the right order, and never let a treatment start on an expired approval.
Oncology medical billing covers cancer care from diagnosis through treatment and survivorship. It includes consultations, chemotherapy and immunotherapy administration, drug acquisition, supportive care, and ongoing monitoring.
The economics are unlike any other specialty. Practices often purchase expensive drugs themselves and bill afterwards, so cash is at risk from the moment the drug is ordered. Payment depends on exact units, correct wastage recording, and an approval that is still valid on the treatment date.
Administration adds a second layer. When several agents are given in one session, they are billed in a defined order of initial, sequential, and concurrent services. Billing them as separate equal charges loses money and invites review.
You buy the drug before you are paid for it, which makes every billing error a cash loss.
The medication frequently exceeds every other line combined, so a small units error is a large loss.
Multiple agents in one session bill as initial, sequential, or concurrent, and the order matters.
Authorisation may cover a set number of cycles, and changes to the regimen usually restart the process.
Discarded drug from single-use vials can be billable when documented at the time of administration.
In oncology, each of these carries an outsized cost.
Units billed from the order rather than the dose actually administered.
The fixReconcile every drug claim against the administration record before submission.
Discarded portions of single-use vials never documented, so the value is lost.
The fixRecord administered and discarded amounts at the chair, not afterwards.
Multiple agents billed as equal charges instead of initial, sequential, and concurrent.
The fixBuild the hierarchy from documented start and stop times for each agent.
Treatment given after the approved cycles ran out or the regimen changed.
The fixTrack approved cycles remaining and re-authorise before any regimen change.
Growth factors, antiemetics, and hydration given but never charged separately.
The fixReconcile the treatment log for supportive agents alongside the primary drug.
Patients eligible for manufacturer or foundation support never enrolled, leaving balances uncollectable.
The fixScreen for assistance programmes at the treatment planning stage.
Drug verification runs before, during, and after treatment.
Coverage and drug benefits are confirmed before the practice purchases anything for that patient.
Requests go out with staging, pathology, and prior therapy attached, and approved cycles are recorded.
Patients facing large balances are screened for manufacturer and foundation support before treatment begins.
Drug claims are built from the administration record, with units and wastage verified line by line.
Infusion charges are sequenced correctly using documented start and stop times for each agent.
Underpayments on drug lines are appealed, and drug margin is reported separately from service revenue.
Buy-and-bill support and payer assistance coordination.
A general outline of oncology coding.
| Range | What It Covers |
|---|---|
| 96401–96417 | Chemotherapy administration by route and duration |
| 96365–96379 | Therapeutic infusion and injection administration |
| 77261–77799 | Radiation treatment planning and delivery |
| 88300–88399 | Surgical pathology and specimen examination |
| 99202–99215 | Office evaluation and treatment planning visits |
| 36555–36571 | Central venous access device placement |
| Group | Clinical Focus |
|---|---|
| C50 | Malignant neoplasm of breast |
| C34 | Malignant neoplasm of bronchus and lung |
| C18–C21 | Colorectal malignancies |
| C81–C96 | Lymphoma, leukaemia, and haematologic malignancies |
| Z51.11 | Encounter for antineoplastic chemotherapy |
| D70 | Neutropenia related to treatment |
Note: This is general education on how oncology coding is organised. Code sets and payer policies change often. Always check the current code set and the payer's active policy for the date of service.
We work inside the system your centre already uses.
Answers for oncology and infusion centre teams.
Verify coverage and authorisation before the drug is ordered, not before it is given. Once a practice purchases an expensive agent for a specific patient, the cash is already committed. Confirming benefits, approval, and remaining cycles at the ordering stage is the only reliable protection. We build that check into the treatment planning step rather than the billing step.
Using the administration hierarchy. One service is the initial administration, others are sequential or concurrent depending on whether they overlapped. Billing them as equal separate charges both underpays and invites review. The hierarchy is built from documented start and stop times for each agent, which is why those times matter far more in oncology than elsewhere.
Only if it is recorded at the chair. Single-use vials frequently contain more than the calculated dose, and the discarded remainder can be billable when documented properly. Reconstructing it afterwards does not hold up. Recording administered and discarded amounts at the point of care converts a routine loss into recoverable revenue on almost every infusion day.
The existing authorisation usually stops applying. Approvals are granted for a specific regimen and a set number of cycles, so a change in agent or schedule typically needs a fresh request. Continuing on the old approval leads to a denial on a very expensive claim. We flag regimen changes as an authorisation trigger before the next treatment is given.
Yes, and at treatment planning rather than after a balance appears. Manufacturer and foundation programmes can cover substantial patient responsibility, but many require enrolment before treatment starts. Patients facing large balances often simply cannot pay them, so screening early protects both the patient and your collections. We build the screen into the pre-treatment workflow.
Because attention concentrates on the primary agent. Growth factors, antiemetics, hydration, and injections given alongside chemotherapy are separately billable, and they are easy to overlook on a busy infusion day. We reconcile the full treatment log rather than just the chemotherapy order, which routinely recovers charges that were performed and documented but never claimed.
Device placement is a separate procedure from the infusion work, and accessing an existing port is handled differently again depending on what else happened that day. Practices often bundle these into the treatment charge and lose the value. We review the day's documentation for access and device work as part of standard reconciliation.
Usually a mismatch between billed units and the payer's expected dosing, or a rate applied below your contract. Because drug lines are so large, even a small percentage gap is significant. Posting line by line against loaded contract rates exposes it. We appeal drug underpayments specifically, since they are frequently absorbed silently into contractual adjustments.
Differently from infused agents, because they usually run through a pharmacy benefit rather than the medical benefit. That changes who authorises, who dispenses, and who gets paid. Patients can face substantial cost sharing. We verify which benefit applies before the prescription is written, so nobody discovers the problem when the patient reaches the pharmacy.
Drug margin reported separately from service revenue. A practice can look profitable overall while losing money on specific regimens, and blended reporting hides that completely. You should see acquisition cost against reimbursement by agent. That view tells you which regimens are financially sustainable, which is a conversation most practices cannot currently have.
We review your drug claims against administration records and contract rates, then show you the units, wastage, and underpayments you are losing.
Submit your details and our AAPC-certified billing auditors will coordinate a free operational audit for your clinic.
Prefer booking a direct 30-minute online calendar slot with our director of RCM?
Book Direct Meeting