A PBM audit finds a brand-name drug billed under a DAW-1 or DAW-2 code, and the pharmacy's own record cannot support it. Both codes tell the PBM that the brand was dispensed and not substituted, and the record is supposed to show why. When the file has no prescriber notation that the brand is medically necessary, no prior authorization record approving it, and no proof of who actually drove that choice, the auditor treats the claim as unsupported. The payment on that claim can then be recouped, in an amount set by the provider manual. Whether the finding reaches beyond the sampled claims also depends on the manual and applicable law.
What Triggers a DAW Finding in a PBM Audit
Four patterns produce this finding. The prescription is missing the prescriber's own notation that the brand is medically necessary, so the chart shows a brand claim with no instruction behind it. An electronic prescription carried a substitution indicator that never populated the pharmacy's dispensing system, so the DAW code billed does not match what the prescriber selected. A patient asked for the brand by name, and the claim is coded as though the prescriber required it, when the record shows only the patient's preference. The state's own substitution law sets what a valid notation looks like, handwritten language, a specific signature line, or another required form, and the chart does not meet it.
What Cures a DAW-1 or DAW-2 Finding
The strongest response produces documentation that existed when the prescription was filled. The original hard copy prescription, or a clear image of it, showing the prescriber's own handwriting or the electronic record's substitution field, is the record PBM manuals point to. A prescriber statement can help, where the manual or state law allows one, when it confirms an instruction the prescriber actually gave at the time of prescribing, not a preference formed after the audit notice arrived. A prior authorization record approving the brand as medically necessary is worth producing as well, because it shows the brand request was reviewed and approved. Pharmacies that keep an organized claim adjudication log alongside the prescription file, the same recordkeeping discipline behind other inventory reconciliation shortfalls findings, are positioned to produce all three quickly.
What a PBM Will Not Accept After the Fact
PBM provider manuals set their own documentation standards, and pharmacies should check the specific manual governing the audit rather than assume a uniform rule. Across that variation, a manual may limit or refuse a prescriber letter drafted only after the audit notice arrives, with no file note, call log, or prior authorization record showing the instruction existed before the claim was billed. A reconstructed account of a verbal conversation, offered without any contemporaneous record, carries the same weakness. If the finding escalates toward a network consequence, the same documentation discipline supports the pharmacy through an audit appeal.
The Brand-Only Product Question on a PA Form
Staff completing a prior authorization request may see a specific line on the form: Should this request be reviewed for a brand only product (DAW-1)? Read with its DAW-1 reference, the question asks whether the prescriber is requiring the brand even though a generic equivalent exists. Answer yes only when the prescriber's record already supports that. Checking the box without the underlying prescriber notation does not create the record. It leaves the same gap for a later audit to find.
State Substitution Law Varies by State
What counts as a valid prescriber notation is a matter of state law, and it is not uniform. States differ on whether the notation must be handwritten, on the specific wording required, and on whether the prescription form itself must carry a particular signature line. A notation that satisfies one state's substitution law may not satisfy another's. Pharmacies filling prescriptions across state lines should confirm the notation requirement that applies to each prescription rather than assume the rule that governs their home state.
A DAW-1 code without the prescriber's own notation in the file, or a DAW-2 code without a note of the patient's request, is a brand claim the record cannot support, and no explanation offered after the audit letter arrives changes what was documented when the prescription was filled.
Why Early Legal Counsel Is Critical
It is critical that pharmacies promptly retain experienced healthcare defense counsel upon receiving a PBM audit notice or document request involving DAW-1 or DAW-2 claims. Early legal intervention can protect the pharmacy's rights, frame the documentation response before the PBM treats a handful of sampled claims as a pattern, avoid conceding an unsupported claim before the file is fully reviewed, and allow counsel to communicate with the PBM on the pharmacy's behalf. Delaying legal representation can allow a handful of flagged claims to grow into a larger recoupment demand.
How Health Law Alliance Can Help
Health Law Alliance has handled 5,000+ matters and brings 25+ years of experience. If a PBM has flagged brand claims in your pharmacy's audit, contact Health Law Alliance's PBM audit defense attorneys for a free, confidential consultation before the response window runs.
