CPT 27446 · Other Procedure · Medicare (WPS MAC)
Partial Knee Arthroplasty (Unicompartmental) at Medicare (WPS MAC).
How Medicare (WPS MAC) approaches CPT 27446 (Partial Knee Arthroplasty (Unicompartmental)) for prior-authorization review: at last review on 2026-05-03, the policy covers this code without prior authorization.
Free with practitioner sign-in — magic-link email auth, no credit card.
WPS-RN-27446Criteria summary
High-level themes from the Medicare (WPS MAC) policy of record for CPT 27446. Verbatim policy text and per-criterion analysis are available after sign-in.
- At least 12 weeks of conservative care typically required.
- Imaging concordance documentation required.
Source: Medicare (WPS) — Reasonable-and-necessary; no WPS-specific LCD for 27446
See the full Medicare (WPS MAC) criteria.
Sign in for verbatim conservative-care language, exact imaging-concordance rules, repeat-procedure thresholds, and the denial-risk score for any specific clinical scenario.
Sign in — free for practitioners →