TL;DR: Aetna modified CPB 0668 covering auditory processing disorder (APD) effective October 8, 2025 — and the position is a hard no across the board. Here's what billing teams need to know.
Aetna's APD coverage policy classifies every diagnostic test and every treatment for auditory processing disorder as experimental, investigational, or unproven. That includes speech therapy billed under CPT 92507 and 92508, central auditory function evaluations under CPT 92620 and 92621, and the full range of audiological function tests from CPT 92551 through 92588. If your practice serves patients with an H93.25 (central auditory processing disorder) diagnosis, expect denial on any of these 46 CPT codes when Aetna is the payer.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna |
| Policy | Auditory Processing Disorder (APD) — CPB 0668 |
| Policy Code | CPB 0668 |
| Change Type | Modified |
| Effective Date | October 8, 2025 |
| Impact Level | High |
| Specialties Affected | Audiology, Speech-Language Pathology, ENT, Pediatric Neurology |
| Key Action | Audit your charge capture and denial workflow for CPT 92507, 92508, 92551–92588, 92620, and 92621 when ICD-10 H93.25 or H93.291–H93.299 appears on the claim |
Aetna Auditory Processing Disorder Coverage Policy and Medical Necessity Requirements 2025
CPB 0668 is not a nuanced policy. Aetna does not cover APD diagnosis or treatment for any indication. There is no covered tier, no exception pathway, and no prior authorization process that unlocks reimbursement. Prior authorization won't help here — Aetna's position is that the scientific evidence doesn't support the validity of APD diagnostic tests or the effectiveness of APD treatments at all.
The policy refers to APD by its older name as well — central auditory processing disorder (CAPD) — so don't assume that a diagnosis coded under CAPD terminology gets different treatment. It doesn't. H93.25 is the ICD-10-CM code for central auditory processing disorder, and it carries the same non-covered status as the broader APD category.
The medical necessity bar here isn't just high — it doesn't exist in a functional sense. Aetna has determined there is no clinical evidence sufficient to establish medical necessity for any APD-related service. You will not meet a medical necessity threshold by submitting additional documentation, letters of medical necessity, or peer-to-peer reviews. The policy forecloses that pathway entirely.
This matters most for pediatric audiology and speech-language pathology practices. APD is frequently diagnosed in school-age children who also have ADHD, dyslexia, or language processing delays. If those patients are covered by Aetna commercial plans, and your practice bills evaluation or treatment under an APD diagnosis, the denial rate will be 100%.
Aetna APD Exclusions and Non-Covered Indications
The scope of what Aetna excludes under CPB 0668 is broad. Every diagnostic test for APD is non-covered — that includes the central auditory function evaluations (CPT 92620 for the initial 60 minutes and CPT 92621 for each additional 15 minutes) that audiologists use specifically to diagnose APD.
Every treatment is also non-covered. Speech therapy billed under CPT 92507 (individual) or CPT 92508 (group, two or more individuals) gets the same denial when APD is the diagnosis. Home-based speech therapy billed under HCPCS S9128 is listed as a related code in CPB 0668; the policy does not explicitly define its coverage status as non-covered, so confirm how Aetna handles this code in the context of your specific claims before assuming it's excluded.
The exclusion also covers the full range of speech and language evaluation codes — CPT 92521 (evaluation of speech fluency), CPT 92522 and 92523 (evaluation of speech sound production), and CPT 92524 (behavioral and qualitative analysis of voice and resonance). If your clinician evaluates an APD patient and codes any of these evaluations to the APD diagnosis, Aetna denies it.
This is not a coding technicality you can work around. The policy explicitly names "speech therapy" as experimental and investigational for APD. Billing speech therapy under a comorbid diagnosis when the clinical encounter was driven by APD creates compliance exposure. Talk to your compliance officer before changing your coding approach on these claims.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| APD diagnostic testing (auditory function tests) | Not Covered — Experimental | CPT 92551–92588, 92620, 92621 | Applies to all auditory function test codes regardless of test type |
| APD treatment — speech therapy, individual | Not Covered — Experimental | CPT 92507 | Includes auditory processing disorder treatment component |
| APD treatment — speech therapy, group | Not Covered — Experimental | CPT 92508 | Two or more individuals; same non-covered status |
| Speech/language evaluation under APD diagnosis | Not Covered — Experimental | CPT 92521, 92522, 92523, 92524 | Evaluations tied to APD diagnosis are excluded |
| Home-based speech therapy | Related — Coverage Status Not Explicitly Defined | HCPCS S9128 | Listed as a related code in CPB 0668; coverage status not explicitly defined as non-covered in the policy |
| Hearing screening | Related — Coverage Varies | HCPCS V5008 | Listed as a related code; coverage depends on indication, not APD-specific |
| Central auditory processing disorder (H93.25) | Non-covered diagnosis for these services | ICD-10 H93.25 | All services listed above are non-covered when tied to this diagnosis |
| Other abnormal auditory perceptions (H93.291–H93.299) | Non-covered for APD-related services | ICD-10 H93.291–H93.299 | Laterality variants; same non-covered status applies |
Aetna APD Billing Guidelines and Action Items 2025
The effective date is October 8, 2025. If you haven't already reviewed your workflows, do it now.
| # | Action Item |
|---|---|
| 1 | Audit your charge capture for CPT 92620 and 92621. These are the central auditory function evaluation codes used specifically for APD diagnosis. If your audiology team bills these with ICD-10 H93.25 on Aetna claims, every one of those claims will deny. Pull a 90-day lookback to assess your current exposure. |
| 2 | Review all speech therapy claims tied to H93.25 or H93.291–H93.299. CPT 92507 and 92508 billed with an APD diagnosis are non-covered under CPB 0668. If your speech-language pathologists treat patients with an APD primary diagnosis, flag those Aetna accounts and confirm how you're coding. |
| 3 | Update your patient financial counseling script for APD patients on Aetna plans. These patients should know before services begin that Aetna does not cover APD diagnosis or treatment. Collect an advance beneficiary notice or equivalent waiver. You can still see these patients — you just need informed consent about out-of-pocket responsibility. |
| 4 | Do not route APD-related denials through peer-to-peer review without legal or compliance sign-off. Aetna's position is that no evidence supports APD services. A peer-to-peer appeal against an experimental designation is almost always a waste of time. If you believe a specific patient's situation warrants an appeal, loop in your billing consultant or compliance officer before spending resources on it. |
| 5 | Check your comorbid diagnosis coding for APD patients. Some APD patients also have covered diagnoses — language disorder, attention-deficit disorder, learning disabilities. If treatment was genuinely directed at a covered condition, coding to that condition may be appropriate. But this requires clinical documentation that clearly supports the non-APD diagnosis as the reason for service. Do not recode to avoid a denial without documentation to back it up. This is a compliance question, not just a billing one. |
| 6 | Cross-reference CPB 0256 for any sensory or auditory integration therapy claims. Aetna's related policy on sensory and auditory integration therapy (CPB 0256) carries similar exclusions. If your practice bills for these services alongside APD treatment, review CPB 0256 separately before October 8, 2025. |
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Auditory Processing Disorder Under CPB 0668
Not Covered / Experimental CPT Codes
| Code | Type | Description | Reason |
|---|---|---|---|
| 92507 | CPT | Treatment of speech, language, voice, communication, and/or auditory processing disorder; individual | Not covered for APD indications — experimental |
| 92508 | CPT | Treatment of speech, language, voice, communication, and/or auditory processing disorder; group, two or more individuals | Not covered for APD indications — experimental |
| 92521 | CPT | Evaluation of speech fluency (e.g., stuttering, cluttering) | Not covered for APD indications — experimental |
| 92522 | CPT | Evaluation of speech sound production (e.g., articulation, phonological process, apraxia, dysarthria) | Not covered for APD indications — experimental |
| 92523 | CPT | Evaluation of speech sound production (e.g., articulation, phonological process, apraxia, dysarthria) | Not covered for APD indications — experimental |
| 92524 | CPT | Behavioral and qualitative analysis of voice and resonance | Not covered for APD indications — experimental |
| 92551 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92552 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92553 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92554 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92555 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92556 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92557 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92558 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92559 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92560 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92561 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92562 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92563 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92564 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92565 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92566 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92567 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92568 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92569 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92570 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92571 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92572 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92573 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92574 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92575 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92576 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92577 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92578 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92579 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92580 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92581 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92582 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92583 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92584 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92585 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92586 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92587 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92588 | CPT | Audiological function tests with medical diagnostic evaluation | Not covered for APD indications — experimental |
| 92620 | CPT | Evaluation of central auditory function, with report; initial 60 minutes | Not covered for APD indications — experimental |
| 92621 | CPT | Evaluation of central auditory function, with report; each additional 15 minutes | Not covered for APD indications — experimental |
Key ICD-10-CM Diagnosis Codes
| Code | Description |
|---|---|
| H93.25 | Central auditory processing disorder |
| H93.291 | Other abnormal auditory perceptions |
| H93.292 | Other abnormal auditory perceptions |
| H93.293 | Other abnormal auditory perceptions |
| H93.294 | Other abnormal auditory perceptions |
| H93.295 | Other abnormal auditory perceptions |
| H93.296 | Other abnormal auditory perceptions |
| H93.297 | Other abnormal auditory perceptions |
| H93.298 | Other abnormal auditory perceptions |
| H93.299 | Other abnormal auditory perceptions |
The real issue with CPB 0668 is that it doesn't leave much room to maneuver. Aetna APD billing is effectively a denial-by-design situation for any claim tied to these diagnosis codes. Your energy is better spent on patient communication and financial counseling than on appeals. Make sure your front desk and clinical teams know which Aetna patients carry an APD diagnosis before services are rendered — not after a claim denial.
If you have a high volume of pediatric audiology or speech-language pathology patients on Aetna plans, review this coverage policy with your compliance officer before October 8, 2025. The combination of a broad non-covered code list and a policy that explicitly names speech therapy as experimental creates real financial exposure if your workflows aren't updated.
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