Speech-language pathologists providing services to Medicare beneficiaries must be enrolled in Medicare as individual providers in independent practice. The enrollment process mirrors PT and OT, but SLP has one significant billing distinction: the KX threshold for SLP is combined with physical therapy.
SLP Medicare enrollment overview
Individual SLP taxonomy code: 235Z00000X Certificate of Clinical Competence (CCC-SLP): Required for Medicare enrollment as an SLP in most states; CMS requires that SLPs hold the CCC or be in their clinical fellowship year under direct supervision of a CCC-holding SLP.
Key applications for SLP providers
| Form | Purpose |
|---|---|
| CMS-855I | Individual SLP enrollment |
| CMS-855B | SLP group practice enrollment |
| CMS-855R | Reassignment to group |
| CMS-460 | Participating agreement |
| CMS-588 | EFT setup |
Step-by-step: Individual SLP enrollment
Step 1: Verify CCC-SLP and state license ASHA’s Certificate of Clinical Competence (CCC-SLP) is required. State licensure is required in most states. Both must be current and active.
Step 2: Verify NPI and taxonomy Type 1 NPI with taxonomy 235Z00000X.
Step 3: Set up PECOS account PECOS account setup →
Step 4: File CMS-855I in PECOS CMS-855I guide →
Step 5: File CMS-460, CMS-588 Step 6: File CMS-855R if joining a group
CY2026 KX threshold: SLP combined with PT
This is the most important billing rule for SLPs to understand:
The Medicare annual therapy threshold for CY2026 combines physical therapy and speech-language pathology into a single shared threshold of $2,480.
This means:
- If your patient has received $1,500 in PT services this year, they have only $980 remaining in the shared PT+SLP threshold
- If the patient has received $2,480 in SLP services, no further SLP services can be provided without the KX modifier, even if they’ve received no PT
- The KX modifier must be applied above the $2,480 combined threshold
Occupational therapy has a separate $2,480 threshold and is NOT combined with PT+SLP.
Full KX threshold analysis for CY2026 →
Practical implication: Before treating a new Medicare patient, check their therapy utilization for the current calendar year. Medicare patients who have seen a PT before seeing an SLP may already be near or above the combined threshold.
Checking patient therapy utilization
Medicare beneficiaries’ therapy utilization is trackable:
- Ask the patient about current or recent therapy treatment
- Use your billing system’s eligibility verification to check remaining therapy benefits (some clearinghouses provide this)
- Medicare Summary Notice (MSN) sent to beneficiaries shows their therapy charges year-to-date
SLP assistant (SLPA) Medicare status
Speech-Language Pathology Assistants (SLPAs) are not separately enrolled Medicare providers and cannot bill Medicare directly for services. Under Medicare, SLP services must be provided by or under the direct supervision of an enrolled SLP.
SLPAs can assist with therapy delivery, but the enrolled SLP is the billing provider. This is different from the PT/PTA and OT/OTA models where the assistant can be enrolled separately and bills at 85%.
⚠️ SLPA-delivered services billed under the SLP’s NPI require the SLP to be present in the room providing direct supervision. Verify supervision standards for your state and payer before setting up any SLPA billing structure.
SLP Medicare coverage areas
Medicare covers medically necessary SLP services, including:
- Dysphagia evaluation and treatment
- Cognitive communication disorders
- Aphasia, apraxia, dysarthria (neurologically-based speech and language disorders)
- Voice disorders
- Fluency disorders
- Language disorders in adults following stroke, TBI, or neurological disease
- Augmentative/alternative communication (AAC) assessment and training
Not covered:
- Developmental language delays (Medicare covers adults and older adults; developmental pediatric SLP is generally not a Medicare service)
- Services that are not medically necessary
- Maintenance services (after all functional improvement has occurred)
⚠️ Risk flags
⚠️ Combined threshold coordination with PT. This is the most common billing error for SLPs seeing patients who also receive PT. Always check the patient’s combined PT+SLP threshold utilization before assuming they have full remaining benefits.
⚠️ Dysphagia documentation. Dysphagia evaluation and treatment claims are common audit targets. Document the specific swallowing deficit, the functional impact, the treatment approach, and the measurable progress. Instrumental assessments (MBSS, FEES) require specific documentation of findings and recommendations.
⚠️ CCC-SLP expiration. If your ASHA CCC-SLP lapses, your Medicare enrollment is at risk. Maintain CCC-SLP and inform your MAC immediately if there is any lapse.
Resources
- KX Threshold CY2026 Update
- CMS-855I — Individual Enrollment Guide
- Physical Therapy Provider Hub — useful context on the shared threshold
- Free Medicare Enrollment Audit
SLP Medicare enrollment questions? Ask Mae →