Care pathway, site of service, and what is already in the room — chronic subjective tinnitus neuromodulation

1. Summary

The domain dossier's Section 2 (care pathway) was built off the candidate's own frontmatter and a guideline fact sheet, not a dedicated search; this report fills that in. The federal special controls that create the QVN device classification require the device's own labeling to state it is meant to be prescribed by "a healthcare professional with expertise in the evaluation and management of tinnitus" — the pathway does not route around that credentialed gatekeeper [2]. US audiology-workforce studies, using different methods and years, both report meaningful shortage in the workforce that sits in that gatekeeper role [8][9]. The VA runs its own stepped-care tinnitus pathway (Progressive Tinnitus Management, PTM) with an established telehealth delivery arm, and has published outcomes for both a telephone-delivered and a video-delivered version of it [5][6][7]. Evidence that a bimodal neuromodulation device specifically can be self-adjusted by a patient at home, which is the technical premise behind a remote-fitting design, exists only as a completed but unreported trial protocol [3]; the closest evidence of clinical substance comes from general (non-tinnitus) teleaudiology hearing-aid fitting studies, which report technical feasibility but mixed patient preference for remote over in-person fitting [10][11][12].

2. What Changed

_Baseline (v1). No prior version; this establishes the starting point for future diffs._

3. Details

Who is allowed to be the gatekeeper, by regulation

The special controls attached to 21 CFR 874.3410 — the regulation the candidate's own classification sits under — require that device labeling include "a statement that the device is intended to be prescribed by a healthcare professional with expertise in the evaluation and management of tinnitus," alongside "information regarding emotional, psychological, and physical considerations for patient selection," and separately require "human factors testing" to "demonstrate that users can successfully use the device in the intended use environment based solely on its labeling and instructions for use" [2]. Read together, the classification assumes a credentialed evaluator at the front of the pathway and a lay user, unsupervised, at the point of daily use — the same two-step structure (clinic evaluation, then home use) the dossier's Section 2 table already sketches from the candidate's own frontmatter, now grounded in the regulation that requires it rather than in the candidate's description of itself.

The referral threshold, in the guideline's own terms

The 2014 AAO-HNSF guideline — already the dossier's source for its treatment recommendations — also defines the threshold at which a patient enters this pathway at all: "persistent tinnitus is six months or longer in duration," and tinnitus is "bothersome" when it "distresses patients and affects quality of life and/or functional health status." The guideline states clinicians "must distinguish if a patient considers his or her tinnitus bothersome or not," and that "about 20% of adults who experience tinnitus require clinical intervention" [1]. That 20% figure is the guideline's own estimate of what fraction of the population counted in the dossier's Section 1 prevalence table (21.4 million US adults with 12-month tinnitus) actually enters a care pathway of any kind, as distinct from the subjective-severity self-report bands the dossier's Section 1 already flags as not directly comparable [1].

The dossier's own standard-of-care comparator trial for TRT (n=151, 18-month follow-up) drew its population from a site of service outside ordinary community audiology altogether: eligibility required being "eligible for care at a Department of Defense Clinical Center," with follow-up assessments scheduled at 3, 6, 12 and 18 months — a site-of-service and visit-cadence detail the dossier's Section 4/5 entry for this trial does not itself state [4].

The VA's own parallel pathway, and its telehealth arm

The VA does not use the AAO-HNSF pathway as its sole model; VA Audiology has run its own stepped-care protocol, Progressive Tinnitus Management (PTM), since 2009, delivered jointly by audiologists (sound-based coping skills) and mental-health clinicians (cognitive-behavioral coping skills) [5][6]. A national survey of 87 VA audiologists and 66 VA mental-health clinicians across major VA facilities found that "few facilities offered full PTM; the majority offered partial or no PTM," and identified seven implementation barriers including "available resources," "service collaboration," and "perceptions of scope of practice" [5]. Two delivery-mode variants have been tested independently of the standard in-clinic model: a telephone-delivered version (an NIH/VA-funded RCT, n=205 US adults with bothersome tinnitus, five appointments — two audiologist-led, three psychologist-led — versus a six-month wait-list control) found "significantly better outcomes" on the Tinnitus Functional Index for the telephone arm [6]; and a video-delivered group format at one VA facility (Bay Pines, fiscal years 2022–2024) reported that 93% of respondents "recommended the workshops for other Veterans with bothersome tinnitus" [7]. Neither VA source evaluates a neuromodulation device; both establish that this domain's largest single payer/provider already operates a telehealth-capable stepped-care pathway that a device entering the VA channel — the dossier's Section 6 already documents a VA Federal Supply Schedule award to the predicate — would sit alongside, not replace.

What is actually constraining the clinic side of the pathway

Two independent, differently-designed US workforce studies report that the credentialed evaluator role the regulation requires (above) is a constrained resource. A JAMA Otolaryngology–Head & Neck Surgery study built a state- and county-level database of hearing-health-care professionals from National Plan and Provider Enumeration System records (2012–2022) and compared it against 2019 county-level hearing-loss prevalence; using a threshold of one or fewer audiologists per 3,500 people with hearing loss, it found "75.0% of US counties were identified as shortage counties" in June 2019, "disproportionately rural," with ten shortage states concentrated in the South [8]. A narrower, state-level study applying three different provider-to-population benchmarks to all 254 Texas counties found the audiologist workforce "insufficient to meet the hearing health care needs of the population in 96% of counties (244 of the 254)," regardless of rurality or border proximity, and named "provision of audiology services via telehealth" as "a promising strategy for improving access" [9]. Neither study is tinnitus-specific or device-specific; both describe the workforce that would perform the candidate's own initial-evaluation and fitting steps.

Remote fitting: what exists for the device itself, and what exists only for the analog

The candidate's own proposed departure from the predicate — remote rather than in-clinic fitting — has one directly on-point study registered and none reported. The University of Minnesota's NCT05518682 (n=26 actual, completed) tested "compliance and acceptance/satisfaction of using a bimodal stimulation device with the ability to self-adjust the sound stimulus presented to the ears via headphones," using virtual video visits for enrollment and follow-up, in patients with a baseline THI of 38–76; the record carries hasResults=false [3][sponsor-reported] — this is the trial's registered intention, not a finding. The closest evidence of clinical substance is general (non-bimodal, non-tinnitus) teleaudiology literature on remote hearing-aid fitting: a retrospective chart review of 51 patients whose hearing aids were remotely renewed using pre-existing audiograms during COVID-19 found a follow-up in-person visit was required in "only 20%" of the remote group [11]; a 378-patient/14-provider service evaluation of a remote hearing-aid delivery service found patients "highly satisfied," but "2 in 3 patients said they would prefer a future hearing-aid fitting to be in-person rather than remote," and providers reported "negative impacts on communication, rapport, and the quality of care" [12]; and a 42-audiologist concept-mapping study in Ontario identified "technology and infrastructure," "hearing healthcare regulations," and "financial considerations" as the dominant factors governing whether audiologists adopt remote follow-up support at all [10]. None of these three studies involves a neuromodulation device or a tinnitus population; they describe the closest analog service-delivery model this pass could locate.

4. Sources

[1] Tunkel DE, et al. "Clinical Practice Guideline: Tinnitus" — Otolaryngology–Head and Neck Surgery / AAO-HNSF Executive Summary and Fact Sheet (published 2014-10-01; accessed 2026-09-01). PMID 25274374 — https://www.entnet.org/resource/aao-hnsf-cpg-tinnitus-press-release-fact-sheet/ [guideline] [2] Combined acoustic and electrical external stimulation device for the relief of tinnitus, special controls — Code of Federal Regulations, Title 21 (eCFR, current issue 2026-08-27; accessed 2026-09-01). 21 CFR 874.3410 — https://www.ecfr.gov/current/title-21/chapter-I/subchapter-H/part-874/subpart-D/section-874.3410 [federal-registry] [3] Assessment of Bimodal Stimulation Device Compliance and Satisfaction in Individuals With Tinnitus — ClinicalTrials.gov, University of Minnesota (record last updated 2025-04-17; accessed 2026-09-01). NCT05518682 — https://clinicaltrials.gov/study/NCT05518682 [trial-registry] [4] Tinnitus Retraining Therapy Trial — ClinicalTrials.gov, Johns Hopkins Bloomberg School of Public Health (record last updated 2018-11-21; accessed 2026-09-01). NCT01177137 — https://clinicaltrials.gov/study/NCT01177137 [trial-registry] [5] Henry JA, et al. "Factors affecting the implementation of evidence-based Progressive Tinnitus Management in Department of Veterans Affairs Medical Centers." PLoS One (published 2020, exact day not given in the PubMed record; accessed 2026-09-01). PMID 33370307 — https://pubmed.ncbi.nlm.nih.gov/33370307/ [peer-reviewed] [6] Henry JA, et al. "Telephone-Based Progressive Tinnitus Management for Persons With and Without Traumatic Brain Injury: A Randomized Controlled Trial." Ear and Hearing (published 2019 Mar/Apr; accessed 2026-09-01). PMID 29847413 — https://pubmed.ncbi.nlm.nih.gov/29847413/ [peer-reviewed] [7] "Virtual Progressive Tinnitus Management Group Care Using VA Video Connect." American Journal of Audiology (published 2025-12-12; accessed 2026-09-01). PMID 40774290 — https://pubmed.ncbi.nlm.nih.gov/40774290/ [peer-reviewed] [8] "Using Supply and Demand to Identify Shortages in the Hearing Health Care Professional Workforce." JAMA Otolaryngology–Head & Neck Surgery (published 2025-09-01; accessed 2026-09-01). PMID 40742737 — https://pubmed.ncbi.nlm.nih.gov/40742737/ [peer-reviewed] [9] "Audiologist Dispersion and Workforce Sufficiency in Texas: A Public Health Investigation." American Journal of Audiology (published 2026-03-05; accessed 2026-09-01). PMID 41499651 — https://pubmed.ncbi.nlm.nih.gov/41499651/ [peer-reviewed] [10] "An examination of clinical uptake factors for remote hearing aid support: a concept mapping study with audiologists." International Journal of Audiology (published 2021 Apr; accessed 2026-09-01). PMID 32749182 — https://pubmed.ncbi.nlm.nih.gov/32749182/ [peer-reviewed] [11] "Remote hearing aid renewal using pre-existing audiograms during the covid-19 pandemic." International Journal of Audiology (published 2023 Aug; accessed 2026-09-01). PMID 35675896 — https://pubmed.ncbi.nlm.nih.gov/35675896/ [peer-reviewed] [12] "Remote hearing-aid delivery and support: perspectives of patients and their hearing care providers." International Journal of Audiology (published 2024 Dec; accessed 2026-09-01). PMID 38284791 — https://pubmed.ncbi.nlm.nih.gov/38284791/ [peer-reviewed]

5. Sourcing & Gaps

Well established: Nothing in this report rests on two independent sources for the same specific quantity; each quantity above is reported by exactly one primary source and is marked accordingly (§ below), even where two studies agree on a general direction (workforce shortage — [8] and [9] — use different methods, years and geographies and are not treated as corroborating a single number).

Thin: Every specific quantity in Section 3 rests on a single source and carries [single-source] implicitly in this section's framing, made explicit here: the 20%-require- intervention figure [1]; the 75.0%-shortage-counties figure [8]; the 96%-of-Texas-counties figure [9]; the Tele-PTM RCT outcome [6]; the VVC group-care satisfaction figure [7]; the PTM implementation-barriers findings [5]; and all three general teleaudiology remote-fitting findings [10][11][12]. NCT05518682 [3] is additionally [sponsor-reported] — a completed trial with hasResults=false is the sponsor's registered intention, not a finding, on exactly the technical question (self-adjustment by the patient) the candidate's remote-fitting design depends on.

Rescoped from class 3: None in this report. Every question addressed here was already class 1 (the CFR special-control text, the trial registry status) or class 2 (a published workforce study, guideline definition, or RCT outcome); no question about what a clinician or patient would do was posed or answered here.

Out of scope: CPT-coded fitting/follow-up visit descriptors (AMA-licensed, per this report's scope note) were not retrieved even though they would sharpen the "what is already in the room" picture of clinic time allocated to a fitting visit. fda.gov guidance on tinnitus devices, if any exists, was not attempted (intermittent bot mitigation, per this report's scope note) and its absence here is not evidence it does not exist.

Not searched vs. not found: Not searched: a staffing-time or capacity study specific to audiology clinics that already dispense Lenire or a comparable QVN-classified device (a search for this would need to name the predicate, which risked returning marketing material rather than a capacity study, and was not attempted this pass). Not found despite a direct search: any peer-reviewed report of outcomes, not just a registered protocol, for self-adjusted or remotely-fit bimodal tinnitus neuromodulation specifically — NCT05518682 [3] is the only record located and it has posted no results.

[inference] The two-step structure implied by reading the 874.3410 special controls [2] alongside the dossier's own Section 2 table (clinic evaluation, then unsupervised home use) is this report's own synthesis of two documents that do not state that structure jointly; each document is read correctly on its own, but their combination into a single "pathway shape" is an inference, not a quoted finding.

6. Claim Candidates