Medical Necessity
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Defines BCBSNC's corporate medical necessity criteria and explains how the determination is applied to coverage and reimbursement decisions for services provided to members across product lines.
No material clinical or coverage changes in this revision.
Medical Necessity and Coverage Determination
Medical Necessity Determination
Covered when ALL of the following are met:
BCBSNC may compare cost-effectiveness of alternative services or supplies when determining coverage and/or setting of care.
BCBSNC does not cover services that do not meet the policy definition of Medical Necessity. Specifically, investigational, cosmetic, or other services that fail to satisfy the Medical Necessity criteria are not covered and will not be reimbursed. The Member’s Benefit Booklet and benefit design should be consulted for individual benefit availability, but a determination that a service is not medically necessary is a basis for denial of coverage.
Services that fail to meet any element of the Medical Necessity definition — for example, those that are experimental, investigational, cosmetic, unnecessary, not within generally accepted standards of medical care, or provided solely for the convenience of the insured, family, or provider — are considered not medically necessary and are not covered.
Applicable Service Codes and Billing Notes
| See procedure code for specific procedure or service. | Applicable service codes; inclusion does not guarantee reimbursement. |
Provider Requirements, Prior Authorization, and Documentation
Prior authorization and code applicability
Inclusion of procedure or service codes in the billing/coding section does not guarantee reimbursement; prior authorization or medical record review may be required to determine medical necessity. Applicable service codes are referenced in the procedure code description for each service.
- Inclusion of a code in this section does not guarantee that it will be reimbursed.
- Applicable service codes: See procedure code for specific procedure or service.
- For reimbursement guidance, consult BCBSNC Administrative Policies on the BCBSNC website.
Provide complete clinical documentation on request
When BCBSNC requests records or prior authorization information, provide complete clinical documentation that addresses the Medical Necessity criteria defined by policy.
- Ensure documentation demonstrates the service meets all five Medical Necessity criteria.
- Include procedure-specific information referenced in the applicable procedure code.
Medical records required — letters alone are insufficient
BCBSNC may request medical records to determine Medical Necessity; letters of support or explanation can be helpful but are not sufficient unless they include all specific information needed for the determination.
- Submit full medical records when requested; do not rely on standalone letters of support.
- Letters are acceptable only if they contain all information necessary to meet the Medical Necessity criteria.
Denial risk if Medical Necessity criteria are not met
Services that do not meet the policy's Medical Necessity definition are not covered and therefore may be denied; a provider’s order alone does not establish Medical Necessity.
- BCBSNC does not cover investigational, cosmetic, or other services that do not meet the Medical Necessity definition.
- Only the member’s medical condition and the policy’s Medical Necessity criteria determine coverage; provider prescription or approval alone is not sufficient.
Policy Scope and Purpose
This policy defines the insurer’s adjudication standard for Medical Necessity and is not intended as clinical treatment guidance. To be adjudicated as medically necessary, a service must meet all five specified criteria: it must be for diagnosis/treatment of a health condition, not be experimental/investigational/cosmetic except as allowed by North Carolina G.S. 58-3-255, be necessary and appropriate for the condition, be within generally accepted standards of medical care, and not be solely for convenience. Clinical decision-making and standards of care referenced here are drawn from peer‑reviewed literature, specialty society recommendations, and practicing physicians in relevant clinical areas.
Key Definitions
Policy History and Review Dates
Policy effective date for current version
Definition of Medical Necessity updated for clarity to align with North Carolina G.S. 58-50-61 following Medical Director review (2/2024)
Policy origination (original policy developed in March 1999 with ongoing implementation history beginning 9/1999); current corporate medical policy recognized with origination noted as 03/1999 in policy history
Most recent scheduled review date recorded in brief metadata (Last Review: 2025-11-20)
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