Aetna modified CPB 0284, its melodic intonation therapy coverage policy, effective September 26, 2025. Here's what billing teams need to know before submitting claims.
Aetna, a CVS Health company, updated Clinical Policy Bulletin CPB 0284 governing melodic intonation therapy (MIT) for members with Broca's aphasia. The policy specifies a strict five-part selection criteria set that every claim must satisfy to clear medical necessity review. There is no dedicated CPT code for MIT — your team will bill this under CPT 92507 or 92508 for speech therapy, along with HCPCS codes G0153 or S9128 for home-based services. Miss a single criterion on documentation, and you're looking at a claim denial.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna, a CVS Health company |
| Policy | Melodic Intonation Therapy |
| Policy Code | CPB 0284 Aetna |
| Change Type | Modified |
| Effective Date | September 26, 2025 |
| Impact Level | Medium |
| Specialties Affected | Speech-Language Pathology, Neurology, Rehabilitation Medicine |
| Key Action | Update documentation checklists for Broca's aphasia patients to confirm all five selection criteria before billing CPT 92507 or 92508 |
Aetna Melodic Intonation Therapy Coverage Criteria and Medical Necessity Requirements 2025
The Aetna melodic intonation therapy coverage policy is narrow and intentional. Aetna considers MIT medically necessary only for members with Broca's aphasia — also called expressive or non-fluent aphasia. And that diagnosis alone won't get you there.
All five of the following criteria must be documented in the member's record:
| # | Covered Indication |
|---|---|
| 1 | Good auditory comprehension — the member understands spoken language despite an inability to produce it fluently |
| 2 | Motivation, emotional stability, and good auditory span — documented by the treating speech-language pathologist (SLP) |
| 3 | Poor repetition, even for single words — this is what differentiates Broca's aphasia patients who are MIT candidates from those who aren't |
| 4 | No evidence of bilateral brain involvement — bilateral lesions are a hard stop |
| 5 | Non-fluent verbal production with diminished articulatory agility and effortful speech initiation — this is the core diagnostic marker; document it precisely in those terms |
Every single one of these conditions must be met. This is an AND-gated policy, not an OR-gated one. One missing criterion means the claim lacks medical necessity support under this coverage policy.
The real issue here is documentation specificity. "Patient has expressive aphasia" is not enough. Your SLP notes need to confirm auditory comprehension status, emotional stability, repetition ability, and absence of bilateral involvement. Evaluations that don't address all five points will struggle at prior authorization and will fail on post-payment audit.
Speaking of prior authorization — this policy doesn't specify a PA requirement explicitly, but Aetna routinely requires prior auth for non-standard speech therapy interventions. Check the member's benefit plan before scheduling. Do not assume fee-for-service speech therapy rules apply here.
Aetna Melodic Intonation Therapy Exclusions and Non-Covered Indications
Aetna has not made MIT medically necessary for a broad range of communication disorders — and the ICD-10 code list attached to CPB 0284 is worth a careful read.
The policy lists codes covering dementia (F01.50–F03.C4), gender identity disorders (F64.x), developmental speech disorders (F80.x), Parkinson's disease (G20.x, G21.x), sequelae of cerebrovascular disease (I69.x), and a wide range of other speech and voice disorders (R47.x, R48.x, R49.x). These codes appear as codes "related to the CPB" — not as covered indications for MIT specifically.
This distinction matters. Having R47.01 (aphasia) or I69.020 (aphasia following cerebral infarction) on a claim does not automatically make MIT medically necessary. The clinical selection criteria — all five of them — still govern. A patient with post-stroke aphasia coded to I69.320 who doesn't meet all five criteria is not a covered MIT candidate.
MIT for patients with Parkinson's disease, dementia, or developmental speech disorders falls outside this medical necessity framework unless those patients also carry a confirmed Broca's aphasia diagnosis and satisfy all five criteria. If that situation applies to anyone in your panel, loop in your compliance officer before billing.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Broca's aphasia with all five selection criteria met | Covered | CPT 92507, 92508; HCPCS G0153, S9128; ICD-10 R47.01, I69.x20 | All five criteria must be documented; prior auth likely required |
| Broca's aphasia — criteria partially met | Not Covered | — | AND-gated policy; partial documentation fails medical necessity |
| Aphasia from cerebrovascular disease without criteria documentation | Not Covered | ICD-10 I69.020–I69.920 | Diagnosis alone does not satisfy coverage policy |
| Parkinson's-related communication impairment | Not Covered for MIT | ICD-10 G20.x, G21.x; R47.x | These codes are related to the CPB but not MIT-covered indications |
| Dementia-related communication impairment | Not Covered for MIT | ICD-10 F01.50–F03.C4 | Outside MIT medical necessity criteria |
| Developmental speech disorders | Not Covered for MIT | ICD-10 F80.x | Outside MIT medical necessity criteria |
| TMS (CPT 90867–90869) billed for MIT | No specific coverage | CPT 90867, 90868, 90869 | Listed as related codes; no specific MIT code exists — do not bill TMS codes as MIT proxies |
Aetna Melodic Intonation Therapy Billing Guidelines and Action Items 2025
Melodic intonation therapy billing sits in an awkward spot: there is no dedicated CPT code for MIT. That's not a new problem, but this policy update makes it urgent to clean up how your team handles it.
| # | Action Item |
|---|---|
| 1 | Update your SLP documentation templates before September 26, 2025. Add a five-point checklist mapped directly to Aetna's selection criteria. Every MIT-related note should confirm: auditory comprehension status, patient motivation and emotional stability, repetition ability for single words, absence of bilateral brain involvement, and non-fluent verbal production with effortful initiation. |
| 2 | Bill MIT services under CPT 92507 (individual) or CPT 92508 (group). There is no dedicated MIT code. The TMS codes — CPT 90867, 90868, and 90869 — appear in the CPB as related codes, not as MIT billing codes. Do not use them as a workaround. That path leads to claim denial and potential audit exposure. |
| 3 | For home-based MIT services, use HCPCS G0153 or S9128. G0153 covers services by a qualified SLP in a home health or hospice setting. S9128 covers speech therapy in the home, per diem. Confirm which code matches the member's setting and benefit plan before submitting. |
| 4 | Verify prior authorization requirements for each Aetna plan. The CPB doesn't mandate prior auth universally, but individual plan documents may. For members in Aetna managed care products, run eligibility and benefits checks specifically for non-standard speech therapy. Don't let a missing PA be the reason a clean claim gets denied. |
| 5 | Audit your ICD-10 code pairings. R47.01 (aphasia) and the I69.x20 series (aphasia as sequelae of cerebrovascular disease) are your strongest diagnosis codes for MIT claims. But the clinical criteria documentation — not the ICD-10 code — is what Aetna will scrutinize in a medical necessity review. Pair the right diagnosis codes with thorough SLP evaluation notes. |
| 6 | Flag any MIT claims for Parkinson's or dementia patients. The ICD-10 codes for Parkinson's (G20.x, G21.x) and dementia (F01.50–F03.C4) are listed as codes related to this CPB, but not as MIT-covered indications. If your SLPs are using MIT techniques with those patient populations and billing Aetna, that billing approach warrants a compliance review now — before the effective date. |
| 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 Melodic Intonation Therapy Under CPB 0284
CPT Codes — No Specific MIT Code (Bill Under Related Speech Therapy Codes)
| Code | Type | Description |
|---|---|---|
| 92507 | CPT | Treatment of speech, language, voice communication, and/or auditory processing disorder; individual |
| 92508 | CPT | Treatment of speech, language, voice communication, and/or auditory processing disorder; group, two or more individuals |
| 90867 | CPT | Therapeutic repetitive transcranial magnetic stimulation (TMS) treatment; initial, including cortical mapping (listed as related code — not an MIT billing code) |
| 90868 | CPT | Therapeutic repetitive transcranial magnetic stimulation; subsequent delivery and management, per session (listed as related code) |
| 90869 | CPT | Therapeutic repetitive transcranial magnetic stimulation; subsequent motor threshold re-determination with delivery and management (listed as related code) |
HCPCS Codes — Home-Based Speech Therapy
| Code | Type | Description |
|---|---|---|
| G0153 | HCPCS | Services performed by a qualified speech-language pathologist in the home health or hospice setting |
| S9128 | HCPCS | Speech therapy, in the home, per diem |
Key ICD-10-CM Diagnosis Codes
| Code | Description |
|---|---|
| R47.01 | Aphasia |
| R47.1 | Dysphasia |
| R47.2 | Dysarthria and anarthria |
| R47.81–R47.89 | Other speech disturbances |
| R47.9 | Unspecified speech disturbances |
| R48.1–R48.8 | Agnosia, apraxia, and other symbolic dysfunctions |
| R49.0–R49.9 | Voice and resonance disorders |
| I69.020 | Aphasia following nontraumatic subarachnoid hemorrhage |
| I69.120 | Aphasia following nontraumatic intracerebral hemorrhage |
| I69.220 | Aphasia following other nontraumatic intracranial hemorrhage |
| I69.320 | Aphasia following cerebral infarction |
| I69.820 | Aphasia following other cerebrovascular disease |
| I69.920 | Aphasia following unspecified cerebrovascular disease |
| F01.50–F03.C4 | Dementia (related to CPB; not a covered MIT indication) |
| F64.0–F64.9 | Gender identity disorders (related to CPB) |
| F80.0–F80.9 | Specific developmental disorders of speech and language (related to CPB; not a covered MIT indication) |
| G20.A1–G20.C | Parkinson's disease (related to CPB; not a covered MIT indication) |
| G21.0–G21.9 | Secondary parkinsonism (related to CPB; not a covered MIT indication) |
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