What this is, in plain language
A surgery that replaces the damaged surfaces of the knee joint with metal and plastic components.
Why a clinician orders it
Severe knee arthritis with pain and loss of function that has not improved with conservative care.
Medical necessity — what insurers usually look at
Insurers typically require imaging confirming joint damage and documentation of conservative treatment (PT, weight management, injections, anti-inflammatories) before approving surgery.
Documentation to ask about
- ✓X-ray or MRI findings
- ✓Conservative treatment tried
- ✓Functional limitations
- ✓BMI / weight history (some plans factor this in)
Questions for your provider
- ?Is the hospital and surgical team in my network?
- ?Has prior auth been received in writing?
- ?Will I be admitted as inpatient or outpatient — and how does that affect what I pay?
Terms you'll see
Medical NecessityRead more →
The insurer is reviewing whether the service is clinically appropriate for your situation.
Prior AuthorizationRead more →
Some services may need plan approval before they are performed.
Conservative TreatmentRead more →
Lower-risk care that insurers may want documented before a bigger procedure.
Important: AuraCode is an educational tool. It does not provide medical, legal, or insurance advice, claims decisions, or approval guarantees. Final coverage depends on your specific plan, eligibility, diagnosis, submitted documentation, and your insurer's review.