As paid vs. as it should have been
| Ln | Code | Description | Paid | Should be | Variance | Result |
|---|---|---|---|---|---|---|
| 1 | 20610 |
Arthrocentesis, aspiration or injection, major joint or bursa
M17.11 · Unilateral primary osteoarthritis, right knee
|
$135.42 | $67.71 | $67.71 | Overpaid |
Determination
No clinical-evidence defect. The record supports the service as documented; what is wrong is how it was coded or priced.
How it was coded
Remedy: Recover the second unit
Up-coding by unit count rather than by level. The service is right; the quantity is not.
Prior authorization
No prior authorization requirement for this service on this plan.
Policy applied
Knowledge CenterGoverns when a second unit of a single-site procedure is separately payable
ingle-site procedure must now carry an anatomical modifier or modifier 59 on the claim line itself. Under version 2.2 a modifier documented in the record was accepted even where it was absent from the line. That is withdrawn: the claim is what is adjudicated, and an edit cannot read a chart. Criteria A second unit of…
CPP-021 DUPLICATE AND REPEAT SERVICES Version 2.3, in force from 1 July 2025 Claims Editing Governance This document is deliberately NOT formatted like the other seeded policies. It has no numbered sections, no "## N." headings and no bulleted criteria list. It is here to test the extractor against a shape it was not…
Coverage on the date of service, and the re-verification at audit
v6.1 was extracted from CPP-080_eligibility-enrolment-retroactive-termination_v6.1.md. Passages are quoted only on the policy the finding rests on.