[Date]

Cigna Appeals Department
Re: First-Level Appeal of Denial for CPT 22857 (Total Lumbar Disc Arthroplasty)
Member: [Patient Name], [Member ID], [DOB]
Insurer: Cigna (commercial)
Denial Category: Experimental/Investigational
Treating Provider: [Provider Name], [NPI]
Medical Specialty: Rehabilitation

To Whom It May Concern:

I am writing on behalf of [Patient Name] to appeal Cigna’s denial of coverage for CPT 22857—Total disc arthroplasty (artificial disc), anterior approach, including discectomy to prepare interspace (other than for decompression), single interspace, lumbar—denied as “experimental/investigational.” The denial mischaracterizes both the index procedure and the medically necessary, evidence-based rehabilitation services that accompany it for a musculoskeletal condition. The requested service meets accepted standards of care and is supported by authoritative federal coverage guidance, national professional guidelines, and high-level peer‑reviewed evidence. We respectfully request that Cigna overturn the denial and authorize CPT 22857 and the medically necessary physical therapy services integral to recovery.

Summary of clinical context and denial
- Procedure: CPT 22857 (lumbar total disc arthroplasty).
- Diagnosis: Musculoskeletal condition requiring physical therapy in rehabilitation.
- Current treatment plan: Physical therapy services appropriate to post-arthroplasty rehabilitation.
- Clinical findings: As detailed in Cigna’s denial letter dated [Date], demonstrating functional limitations and need for surgical intervention followed by skilled rehabilitation.
- Denial reason: “Experimental or investigational.”

Medical necessity and standard of care
Lumbar artificial disc replacement (LADR) is a recognized surgical option for select patients with lumbar degenerative disc pathology, and postoperative rehabilitation by a licensed physical therapist is a standard, non‑investigational component of care for musculoskeletal recovery. The American Physical Therapy Association (APTA) explicitly supports evidence‑based physical therapy to reduce unwarranted variation and improve value; its Clinical Practice Guidelines (CPGs) and development manual underscore that PT for musculoskeletal conditions is grounded in rigorous evidence and clinical consensus, not experimentation (American Physical Therapy Association; https://www.apta.org/patient-care/evidence-based-practice-resources/cpgs; https://www.apta.org/contentassets/ab3a561c2a5e4cb5928d2bd2da93ab7d/apta-cpg-manual-2022.pdf).

Authoritative federal coverage guidance confirms non-experimental status
While we recognize that Cigna is a commercial plan, Centers for Medicare & Medicaid Services (CMS) policies are authoritative and highly persuasive regarding whether services are considered established and medically necessary.

- CMS National Coverage Determination (NCD) for Lumbar Artificial Disc Replacement (LADR) (150.10) recognizes circumstances in which LADR may be covered, specifically noting that for Medicare beneficiaries 60 years of age and younger there is no national noncoverage, and coverage decisions continue to be made at the local level (Centers for Medicare & Medicaid Services; https://www.cms.gov/medicare-coverage-database/view/ncd.aspx?NCDId=313). This federal classification is incompatible with labeling LADR as “experimental.”

- CMS Billing and Coding Article for Lumbar Artificial Disc Replacement confirms the existence of established claims-processing pathways that complement applicable Local Coverage Determinations (LCDs) for LADR (Centers for Medicare & Medicaid Services; https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleid=56390&ver=11&keyword=artificial%20disc&keywordType=starts&areaId=all&docType=NCA,CAL,NCD,MEDCAC,TA,MCD,6,3,5,1,F,P&contractOption=all&sortBy=relevance&bc=1).

- CMS LCDs for physical therapy (home health and outpatient) make clear that PT for musculoskeletal conditions is covered when medically necessary—establishing PT as a standard, non‑investigational service:
  • LCD L33942 (Home Health PT) states: “In order for the plan of care to be covered, it must address a condition for which physical therapy is an accepted method of treatment, as defined by standards of medical practice. There must be an expectation that the condition will improve significantly in a reasonable and generally predictable period of time… [and] services… can be safely and effectively performed only by a licensed qualified physical therapist.” This applies directly to post-arthroplasty rehabilitation (Centers for Medicare & Medicaid Services; https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdId=33942&ver=49).
  • LCD L34564 (Home Health Physical Therapy) similarly covers PT for musculoskeletal rehab, including scenarios requiring ambulation re‑education and progressive mobility training after trauma or surgery, under §1862(a)(1)(A) medical necessity (Centers for Medicare & Medicaid Services; https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?LCDId=34564).
  • LCD L34428 (Outpatient Physical Therapy) outlines the claims framework supporting covered outpatient PT for musculoskeletal rehab in alignment with NCDs and LCDs—further evidencing that PT in this context is routine, not investigational (Centers for Medicare & Medicaid Services; https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdId=34428&ver=93).

- CMS Claims Processing Manual references the NCD framework for coverage determinations, reinforcing that the system provides established, non-experimental processing guidance for covered services and related rehabilitation where medically necessary (Centers for Medicare & Medicaid Services; https://www.cms.gov/Regulations-and-Guidance/Guidance/Manuals/downloads/clm104c32.pdf).

These federal policies collectively demonstrate that both LADR and the associated rehabilitation have defined, mature coverage pathways in the nation’s primary public payer system. While CMS guidance does not directly bind Cigna, it is compelling evidence that neither the procedure nor its rehabilitative care is “experimental.”

Cigna’s own policy materials recognize CPT 22857
Cigna’s medical coverage policy on Intraoperative Monitoring explicitly lists CPT 22857 among recognized spinal procedure codes within its coding information, without categorically labeling it investigational in that document. The policy cites “22857 Total disc arthroplasty (artificial disc), anterior approach, including discectomy to prepare interspace (other than for decompression), single interspace, lumbar” alongside related codes, indicating that Cigna recognizes and manages this code in the normal course of benefits administration when criteria are met (Cigna Coverage Policy; https://static.cigna.com/assets/chcp/pdf/coveragePolicies/medical/mm_0509_coveragepositioncriteria_intraoperativemonitoring.pdf). This internal acknowledgment is inconsistent with a blanket “experimental” denial.

High-level peer‑reviewed evidence supports physical therapy as effective, guideline‑based care in musculoskeletal conditions
Multiple Level I systematic reviews and meta-analyses confirm that physical therapist–delivered care is effective, evidence‑based, and patient‑centered in musculoskeletal populations—precisely the clinical context for rehabilitation following lumbar arthroplasty:

- Evidence-based PT and adherence to musculoskeletal CPGs: Systematic reviews show substantial adoption of recommended, guideline‑concordant PT care and effectiveness of implementation strategies to further improve adherence, underscoring PT’s evidence‑driven nature (Physical Therapy, 2020; https://pubmed.ncbi.nlm.nih.gov/31591090/; update: https://pubmed.ncbi.nlm.nih.gov/32387047/).

- Patient-centered outcomes: A systematic review of musculoskeletal PT care reports high patient satisfaction associated with pain reduction and functional improvement (Physical Therapy, 2011; https://pubmed.ncbi.nlm.nih.gov/21071504/).

- Enhanced outcomes with integrated approaches: A meta‑analysis shows that physiotherapist-delivered psychological interventions combined with PT significantly improve pain and disability outcomes in musculoskeletal pain conditions (Physical Therapy, 2018; https://pubmed.ncbi.nlm.nih.gov/29554030/).

- Care model effectiveness: A 2024 meta‑analysis of RCTs finds first‑contact physical therapy improves efficiency compared to usual primary care for musculoskeletal disorders (https://pubmed.ncbi.nlm.nih.gov/40511847/). Evidence from emergency department settings similarly supports PT-led models for acute musculoskeletal issues (Physical Therapy, 2019; https://pubmed.ncbi.nlm.nih.gov/31505674/), and advanced practice physiotherapy shows positive outcomes in triage/management (https://pubmed.ncbi.nlm.nih.gov/22716771/).

- Individualized evaluation: A 2022 systematic review of single-case experimental designs in musculoskeletal PT supports the suitability of PT interventions for individualized rehab, acknowledging methodological considerations while reinforcing clinical utility (Physiotherapy, 2022; https://pubmed.ncbi.nlm.nih.gov/35961063/).

Together with APTA’s CPG resources and development standards (https://www.apta.org/patient-care/evidence-based-practice-resources/cpgs; https://www.apta.org/contentassets/ab3a561c2a5e4cb5928d2bd2da93ab7d/apta-cpg-manual-2022.pdf), these data affirm that skilled PT services for musculoskeletal conditions—such as post‑LADR rehabilitation—are established, effective, and non‑investigational.

Addressing the denial rationale directly
- Experimental/investigational classification: Authoritative CMS policies recognize LADR for appropriate candidates and provide established billing/coding guidance, and CMS LCDs explicitly cover PT for musculoskeletal rehabilitation when medically necessary (see URLs cited above). That recognition is fundamentally at odds with an “experimental” label.
- Standard-of-care rehabilitation: APTA’s guidelines and peer‑reviewed systematic reviews/meta‑analyses consistently support PT as evidence-based standard care for musculoskeletal recovery. The LCD criteria (e.g., L33942) align with this patient’s clinical scenario where a physician has determined the need for skilled PT with an expectation of functional improvement.
- Internal policy inconsistency: Cigna’s own coverage policy lists CPT 22857 within its coding framework, indicating recognized use rather than blanket investigational status (https://static.cigna.com/assets/chcp/pdf/coveragePolicies/medical/mm_0509_coveragepositioncriteria_intraoperativemonitoring.pdf).

Acknowledging evidence gaps
We note that some payer‑specific spinal policies were not located beyond Cigna’s intraoperative monitoring policy, and large meta‑analyses focused specifically on post‑LADR PT are limited. Nevertheless, federal coverage frameworks for LADR, multiple CMS LCDs for PT, APTA’s rigorous guideline process, and numerous Level I reviews in musculoskeletal PT collectively demonstrate that both the index procedure (in appropriate candidates) and the associated PT are established, non‑experimental medical care.

Request
- Overturn the experimental/investigational denial for CPT 22857 and authorize coverage based on medical necessity, consistency with authoritative federal guidance, and the standard of care.
- Authorize medically necessary physical therapy services integral to post‑arthroplasty recovery, consistent with CMS LCD criteria and APTA guideline standards, to address [Patient Name]’s documented functional limitations and rehabilitation goals.
- If Cigna believes that plan‑specific criteria were not met, please provide the exact policy language relied upon, the credentials of the reviewing clinician, and a clear, clinically reasoned explanation referencing the member’s specific findings in the record.

We request expedited review to prevent delays in necessary care and to mitigate risk of avoidable deterioration in function. Please contact my office at [Phone] or [Email] for any additional clinical documentation you require, including operative planning, imaging, physical therapy evaluations, and the treating physician’s plan of care.

Thank you for your prompt reconsideration.

Sincerely,

[Provider Name], [Credentials]
[NPI]
[Practice Name]
[Address]
[Phone] | [Fax] | [Email]

References (evidence cited)
- Centers for Medicare & Medicaid Services. NCD—Lumbar Artificial Disc Replacement (LADR) (150.10). https://www.cms.gov/medicare-coverage-database/view/ncd.aspx?NCDId=313
- Centers for Medicare & Medicaid Services. Billing and Coding: Lumbar Artificial Disc Replacement. https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleid=56390&ver=11&keyword=artificial%20disc&keywordType=starts&areaId=all&docType=NCA,CAL,NCD,MEDCAC,TA,MCD,6,3,5,1,F,P&contractOption=all&sortBy=relevance&bc=1
- Centers for Medicare & Medicaid Services. LCD—Physical Therapy—Home Health (L33942). https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdId=33942&ver=49
- Centers for Medicare & Medicaid Services. LCD—Home Health Physical Therapy (L34564). https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?LCDId=34564
- Centers for Medicare & Medicaid Services. LCD—Outpatient Physical Therapy (L34428). https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdId=34428&ver=93
- Centers for Medicare & Medicaid Services. Medicare Claims Processing Manual. https://www.cms.gov/Regulations-and-Guidance/Guidance/Manuals/downloads/clm104c32.pdf
- American Physical Therapy Association. Clinical Practice Guidelines. https://www.apta.org/patient-care/evidence-based-practice-resources/cpgs
- American Physical Therapy Association. APTA Clinical Practice Guideline Process Manual (2022). https://www.apta.org/contentassets/ab3a561c2a5e4cb5928d2bd2da93ab7d/apta-cpg-manual-2022.pdf
- Cigna. Intraoperative Monitoring—Coverage Policy (includes coding reference for CPT 22857). https://static.cigna.com/assets/chcp/pdf/coveragePolicies/medical/mm_0509_coveragepositioncriteria_intraoperativemonitoring.pdf
- Physical Therapy (2020). Effectiveness of implementation strategies to improve adherence of physical therapist treatment choices to CPGs for musculoskeletal conditions—Systematic review. https://pubmed.ncbi.nlm.nih.gov/31591090/
- Update on PT adherence to recommended care for musculoskeletal conditions. https://pubmed.ncbi.nlm.nih.gov/32387047/
- Physical Therapy (2011). Patient satisfaction with musculoskeletal physical therapy—Systematic review. https://pubmed.ncbi.nlm.nih.gov/21071504/
- Physical Therapy (2018). Physiotherapist‑delivered psychological interventions plus physiotherapy—Systematic review and meta‑analysis. https://pubmed.ncbi.nlm.nih.gov/29554030/
- Meta‑analysis (2024). First‑contact physical therapy vs usual primary care for MSK disorders. https://pubmed.ncbi.nlm.nih.gov/40511847/
- Physical Therapy (2019). Benefits of musculoskeletal physical therapy in emergency departments—Systematic review. https://pubmed.ncbi.nlm.nih.gov/31505674/
- Advanced practice physiotherapy in musculoskeletal care—Systematic review. https://pubmed.ncbi.nlm.nih.gov/22716771/
- Physiotherapy (2022). N‑of‑1 and single‑case designs in MSK PT—Systematic review. https://pubmed.ncbi.nlm.nih.gov/35961063/