CurrentBlue Cross Blue Shield of VermontPolicy 10.99.VT85

Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders Corporate Medical Policy

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This policy governs coverage and prior approval for the IB-STIM percutaneous electrical nerve field stimulation device for children and adolescents with Rome IV-defined functional gastrointestinal disorders. It also addresses investigational uses, coding, durable medical equipment replacement, and benefit administration for Blue Cross Blue Shield of Vermont members.

Policy Summary

PayerBlue Cross Blue Shield of Vermont

PolicyPercutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders

Policy CodePolicy 10.99.VT85

Change TypeCoding update

Effective DateJanuary 1, 2026

Last ReviewJul 1, 2025

Next Review DateJuly 1, 2026

Key ActionObtain prior approval for CPT 64567 and submit complete documentation supporting all medical-necessity criteria.

SourceLink

POLICY UPDATE CHANGES

Effective January 1, 2026, CPT code 0720T was deleted from the prior-approval coding table and CPT code 64567 was added.

The policy statement and coverage criteria were unchanged in this revision.

11-21Eligible age

9 monthsMinimum duration

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CurrentBlue Cross Blue Shield of VermontPolicy 10.99.VT85

Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders Corporate Medical Policy

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Policy Summary

PayerBlue Cross Blue Shield of Vermont

PolicyPercutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders

Policy CodePolicy 10.99.VT85

Change TypeCoding update

Effective DateJanuary 1, 2026

Last ReviewJul 1, 2025

Next Review DateJuly 1, 2026

Key ActionObtain prior approval for CPT 64567 and submit complete documentation supporting all medical-necessity criteria.

SourceLink

POLICY UPDATE CHANGES

Effective January 1, 2026, CPT code 0720T was deleted from the prior-approval coding table and CPT code 64567 was added.

The policy statement and coverage criteria were unchanged in this revision.

11-21Eligible age

9 monthsMinimum duration

Medication categories

64567Prior-approval CPT

InvestigationalOther uses

Medical Necessity and Investigational Use

IB-STIM medically necessary use

The IB-STIM device may be considered medically necessary in children and adolescents when ALL of the following criteria are met:

Medical necessity criteria

Age: The patient is 11–21 years of age11–21 years
Diagnosis: The patient has a Rome IV-defined functional gastrointestinal disorder, including functional abdominal pain, functional abdominal pain syndrome, irritable bowel syndrome, functional dyspepsia, or abdominal migraineRome IV-defined disorder
Exclusion of organic disease: Organic gastrointestinal disease has been ruled outOrganic GI disease ruled out
Duration: The functional gastrointestinal problem has been present for at least 9 monthsAt least 9 months
Conservative treatment failure: The patient has tried and failed medications in all three categories—acid suppression, antispasmodic or motility medications, and neuromodulators—in addition to diet modificationFailure of all 3 medication categories plus diet modification
Acid suppression includes H2 blockers or PPIs; antispasmodic or motility medications include hyoscyamine, dicyclomine, erythromycin/linaclotide, or prucalopride; neuromodulators include amitriptyline, nortriptyline, gabapentin, Periactin, or aprepitant.

Investigational uses

All other uses of the IB-STIM device that do not meet the medical-necessity criteria above are considered investigational.

Investigational use: The use does not meet all stated medical-necessity criteriaAny required criterion absent or unsatisfied

Such use is considered investigational.

Replacement of a lost, stolen, or destroyed durable medical equipment, prosthetic, or orthotic item is excluded when the applicable replacement criteria have not been met or when more than one such item is requested during a Plan Year.

Coding and Coverage Parameters

Prior Approval RequiredCPTCovered

64567

Percutaneous electrical nerve field stimulation, cranial nerves, without implantation

Deleted CPT CodeCPT

0720T

Code deleted from the prior-approval coding table effective 01/01/2026

Patient age

Eligible age range11-21 years

Duration of functional gastrointestinal problem

Minimum durationAt least 9 months

Medication treatment history

Required treatment historyTried and failed medications in all 3 categories—acid suppression, antispasmodic or motility medications, and neuromodulators—in addition to diet modification

Acid suppressionH2 blockers or PPIs

Authorization, Documentation, and Compliance

Prior Authorization

Prior Approval Required

Prior approval is required before providing the applicable percutaneous electrical nerve field stimulation service. Benefits remain subject to the member’s contract terms, limitations, and conditions.

CPT 64567 — percutaneous electrical nerve field stimulation, cranial nerves, without implantation.
Verify member eligibility and applicable benefits before providing the service.

Step Therapy

Required Medication Trials

For IB-STIM® to be considered medically necessary, the patient must have tried and failed medications in all three required categories, in addition to diet modification.

Acid suppression: H2 blockers or proton pump inhibitors (PPIs).
Antispasmodic or motility medications: hyoscyamine, dicyclomine, erythromycin, linaclotide, or prucalopride.
Neuromodulators: amitriptyline, nortriptyline, gabapentin, Periactin, or aprepitant.

Therapy Background

Percutaneous electrical nerve field stimulation delivers electrical impulses through the external ear to branches of the cranial and occipital nerves associated with central pain processing. The IB-STIM system is intended for pediatric and adolescent patients with functional abdominal pain related to functional gastrointestinal disorders, including irritable bowel syndrome.

Policy Definitions

IB-STIM

DeviceA percutaneous electrical nerve field stimulator (PENFS) system

Intended populationPatients 11-18 years of age with functional abdominal pain associated with irritable bowel syndrome

ApplicationApplied to branches of cranial nerves V, VII, IX, and X, and the occipital nerves through the external ear

Percutaneous electrical nerve field stimulation

DefinitionTransmission of electrical impulses to cranial nerve bundles in the ear targeting brain areas involved in processing pain

Functional abdominal pain applicationTargets nerves processing pain for the abdominal region

Policy Summary

PayerBlue Cross Blue Shield of Vermont

PolicyPercutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders

Policy CodePolicy 10.99.VT85

Change TypeCoding update

Effective DateJanuary 1, 2026

Last ReviewJul 1, 2025

Next Review DateJuly 1, 2026

Key ActionObtain prior approval for CPT 64567 and submit complete documentation supporting all medical-necessity criteria.

SourceLink

On This Page

Antispasmodic or motility medicationsHyoscyamine, dicyclomine, erythromycin/linaclotide, or prucalopride

NeuromodulatorsAmitriptyline, nortriptyline, gabapentin, Periactin, or aprepitant

Document the diet-modification trial.

Documentation Required

Medical Necessity Documentation

Submit medical-necessity documentation supporting that the patient meets all eligibility requirements for IB-STIM®. Documentation should establish the diagnosis, exclusion of organic disease, duration of symptoms, and prior treatment history.

Patient is 11–21 years of age.
ROME IV-defined functional gastrointestinal disorder is documented, such as functional abdominal pain, functional abdominal pain syndrome, irritable bowel syndrome, functional dyspepsia, or abdominal migraine.
Organic gastrointestinal disease has been ruled out.
The problem has been present for at least 9 months.
Required medication failures and diet modification are documented.

Documentation Required

Documentation for Stolen DME Replacement

Replacement requests for lost, stolen, or destroyed durable medical equipment, prosthetics, or orthotics must include documentation supporting the request. A police report or similar documentation is required for a stolen item.

Document that the absence of the equipment would put the member at risk of death, disability, or significant negative health consequences, such as hospital admission.
Document that the equipment is still under warranty.
Document that replacement is not covered by an alternative entity, including homeowners or automobile insurance.
Submit a police report when requesting replacement of stolen equipment.

Denial Risk

Criteria Not Met: Investigational

All other uses of IB-STIM® that do not meet the medical-necessity criteria are considered investigational and are not eligible for coverage under these criteria.

Confirm that every medical-necessity criterion is met before requesting or providing treatment.
Do not represent IB-STIM® as medically necessary when the criteria are not satisfied.

Prior Authorization

Incomplete Authorization Request

Incomplete authorization requests may delay the benefit decision while missing information is obtained. Submit a complete request addressing the policy guidelines and supporting documentation.

Include the required clinical records, diagnosis, exclusion workup, treatment history, and medication-trial documentation.
Respond to requests for missing information promptly.

Billing Rule

Audit Noncompliance

Blue Cross VT may audit any provider or facility for compliance with the medical policy. If an audit identifies non-compliance, Blue Cross VT reserves the right to recoup all non-compliant payments.

Maintain documentation demonstrating compliance with the policy guidelines.
Ensure billed services and authorization records match the member’s coverage and medical-necessity requirements.

Denial Risk

DME Replacement Limits

Replacement of lost, stolen, or destroyed durable medical equipment, prosthetics, or orthotics is limited to one item per Plan Year when the policy conditions are met and the item is not covered by an alternative entity.

Replacement is excluded when the applicable replacement criteria have not been met.
More than one lost, stolen, or destroyed item per Plan Year is not covered.
The equipment must still be under warranty and its absence must pose a risk of death, disability, or significant negative health consequences.

Rome IV-defined functional gastrointestinal disorder

Qualifying disordersFunctional abdominal pain, functional abdominal pain syndrome, irritable bowel syndrome, functional dyspepsia, and abdominal migraine

Additional requirementThe disorder must be Rome IV-defined, and organic gastrointestinal disease must have been ruled out