ModifiedUnitedHealthcarePolicy CS081KS.02

Nerve Graft to Restore Erectile Function During Radical Prostatectomy (for Kansas Only)

This policy governs coverage of autologous or allogenic nerve grafting procedures intended to restore erectile function performed during or after radical prostatectomy for members in Kansas.

Policy Summary

PayerUnitedHealthcare

PolicyNerve Graft to Restore Erectile Function During Radical Prostatectomy (for Kansas Only)

Policy CodePolicy CS081KS.02

Change TypeRevised content and archived prior version

Effective DateDec 1, 2025

Next Review DateN/A

Key ActionDo not authorize autologous or allogenic nerve grafting to restore erectile function for Kansas members because the procedure is considered unproven and not medically necessary.

SourceLink

POLICY UPDATE CHANGES

Updated Description of Services, Clinical Evidence, FDA, and References sections to reflect the most current information.

Kansas-onlystate specificity

Not medically necessarycoverage stance

55899, 64999reference codes

1policy version archived

Kansas

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Coverage Determination

Not Medically Necessary

Covered when ALL of the following are met:

Not medically necessary stance: Autologous (e.g., sural) or allogenic nerve grafts to restore erectile function during or after radical prostatectomy are unproven and not medically necessary due to insufficient evidence of efficacy.

Autologous (e.g., sural) or allogenic nerve grafts performed to restore erectile function during or after radical prostatectomy are expressly excluded from coverage under this policy. The policy finds these procedures to be unproven and not medically necessary because there is insufficient evidence demonstrating efficacy for restoration of erectile function.

In summary, nerve grafting techniques intended to reinnervate erectile function after radical prostatectomy are considered investigational. As such, these interventions are regarded as not medically necessary and are not supported for routine coverage based on the available evidence.

This policy is informational and must be applied in the context of the member’s governing benefit terms. Reference the applicable federal, state, or contractual benefit plan requirements when making coverage decisions, as those requirements take precedence in the event of conflict. Listing procedure codes in this policy (for example, 55899 or 64999) is for reference only and does not guarantee coverage or payment.

Applicable Procedure Codes (Reference)

Applicable Codes (reference)CPT

55899	Unlisted procedure, male genital system.
64999	Unlisted procedure, nervous system

Prior Authorization, Documentation, and Billing Guidance

Prior Authorization

Prior Authorization and Coding

Prior Authorization Required: Prior authorization is required for procedures involving autologous or allogenic nerve grafting to restore erectile function in Kansas. Requests should include complete operative reports, preoperative and postoperative erectile function assessments, and rationale for grafting versus nerve-sparing approaches.

Include detailed operative note and documentation of prior conservative or guideline-based management.
Attach preoperative erectile function status and age-related considerations documented per NCCN guidance.

Note

Prior Authorization Criteria Source

Use InterQual as the primary source for prior authorization criteria. If InterQual does not contain applicable criteria for the requested procedure, adjudicators will apply the relevant UnitedHealthcare Medical Policy content that has been approved by the Kansas Department of Health and Environment.

Submit authorization requests with clinical documentation that maps to InterQual criteria when available.

Procedures and Techniques Defined

Sural nerve grafting (SNG) — definition and concise description

TermSural nerve grafting (SNG)

DefinitionHarvesting a segment of the sural nerve from the lower leg and grafting it to the resected cavernous nerve(s) during radical prostatectomy to attempt reinnervation and restore erectile function.

NotesThe sural nerve travels along the short saphenous vein, is considered expendable, and is commonly used as a donor nerve for peripheral nerve grafting; grafting may be performed on one or both resected cavernous nerves.

Spider silk nerve reconstruction (SSNR) — definition and concise description

TermSpider silk nerve reconstruction (SSNR)

DefinitionAn investigational technique using spider silk conduits placed along neurovascular bundles during robot-assisted radical prostatectomy intended to facilitate nerve regeneration and improve erectile function recovery.

Clinical Background

Erectile dysfunction is a common consequence of radical prostatectomy, particularly when cavernous neurovascular bundles are resected. Nerve-sparing surgical approaches aim to preserve erectile function but are not always feasible depending on cancer extent and operative factors. Techniques such as sural nerve grafting and other interpositional or neurorrhaphy procedures have been proposed to bridge resected cavernous nerves and promote reinnervation, but current evidence does not establish consistent efficacy, which underlies the policy position that such grafting is unproven.

Policy Version and Changes

2025-12-01revisedLatest

Archived previous policy version CS081KS.01 and updated Description of Services, Clinical Evidence, FDA, and References sections to reflect the most current information.

Policy Summary

PayerUnitedHealthcare

PolicyNerve Graft to Restore Erectile Function During Radical Prostatectomy (for Kansas Only)

Policy CodePolicy CS081KS.02

Change TypeRevised content and archived prior version

Effective DateDec 1, 2025

Next Review DateN/A

Key ActionDo not authorize autologous or allogenic nerve grafting to restore erectile function for Kansas members because the procedure is considered unproven and not medically necessary.

SourceLink

On This Page

When relying on UnitedHealthcare Medical Policies, reference the policy text and approval status for Kansas-specific determinations.

Documentation Required

Reference Governing Benefit Terms

Benefit Plan Terms Govern: Coverage determinations are made in the context of applicable federal, state, and contractual benefit terms. If those governing benefit terms conflict with this Medical Policy, the federal, state, or contractual requirements will take precedence.

Verify member-specific plan documents and any state-mandated coverage requirements before approving or denying services.

Billing Rule

Coding and Documentation

Coding and Documentation: The listed unlisted procedure codes (CPT 55899 — Unlisted procedure, male genital system; CPT 64999 — Unlisted procedure, nervous system) are provided for reference only and do not imply coverage or reimbursement. Use the most specific CPT code available and include detailed operative description to support use of unlisted codes when submitted.

55899 — Unlisted procedure, male genital system (reference only).
64999 — Unlisted procedure, nervous system (reference only).
Listing of a code does not imply the service is covered or guarantees payment; document medical necessity and governing plan terms.

Documentation Required

Plan Documentation Requirement

Plan Documentation Requirement: Submit complete clinical records with authorization requests, including operative reports, pre- and post-operative functional assessments, prior conservative management, and any multidisciplinary evaluations. Decisions will also incorporate federal, state, and contractual requirements.

Include NCCN-aligned documentation showing degree of cavernous nerve preservation and justification for grafting.
Provide documentation of prior discussions of nerve-sparing versus grafting approaches.

Step Therapy

Step Therapy / Clinical Pathway: Step therapy does not apply to nerve grafting procedures in this context. Clinical decision-making should follow guideline-based determinants (e.g., nerve preservation, patient age, preoperative erectile function) with nerve preservation being the primary determinant of postoperative erectile function recovery.

No step-therapy sequence is required, but documentation must demonstrate consideration of nerve-sparing techniques and guideline-based management prior to grafting.

NotesReported in a first-in-men feasibility analysis (Harke et al., 2023); considered investigational with limited clinical evidence to support routine use.

Nerve grafting techniques — definitions and brief notes

Interpositional graftingSurgical placement of a donor nerve segment between proximal and distal ends of a resected cavernous nerve to bridge the gap and attempt reinnervation following prostatectomy.

End-to-side neurorrhaphySomatic-to-autonomic end-to-side nerve coaptation techniques reported to connect a donor somatic nerve to the autonomic cavernous nerve stump to promote reinnervation of erectile tissue.

Clinical contextThese techniques (including interpositional sural grafts and end-to-side somatic-autonomic neurorrhaphy) have been described in case series and early trials but remain unproven for routine restoration of erectile function after radical prostatectomy.