Mostly untimed codes, often pediatric coverage
Speech-language pathology is a rehabilitation discipline treating communication, voice, cognition and swallowing disorders in children and adults. Unlike physical and occupational therapy, most speech therapy treatment is billed with untimed, per-session codes, so the 8-minute rule usually does not apply. A large share of pediatric speech therapy is covered by Medicaid, while adult services are often tied to stroke, brain injury, neurological disease or swallowing problems.
Evaluations and treatment
| Service | Codes | Billed |
|---|---|---|
| Speech fluency evaluation | 92521 | Per evaluation |
| Speech sound production evaluation; with language comprehension and expression | 92522; 92523 | Per evaluation — 92523 when both are evaluated |
| Voice and resonance evaluation | 92524 | Per evaluation |
| Treatment of speech, language, voice, communication or auditory processing | 92507 (individual), 92508 (group) | Once per session, untimed |
| Cognitive function intervention | 97129, 97130 | Timed: first 15 minutes, each additional 15 |
Choosing the evaluation code that describes everything assessed — rather than billing several overlapping ones — prevents bundling denials. Standardized test scores, functional goals and progress are what payers review when they decide whether to continue coverage.
Swallowing and AAC
- Swallowing: clinical swallow evaluation (92610), instrumental studies such as the modified barium swallow (92611) or endoscopic evaluation (92612), and swallowing treatment (92526), each with its own documentation requirements.
- Augmentative and alternative communication: evaluation for a speech-generating device (92607, 92608) and therapeutic services for its use (92609); the device itself is usually billed by a supplier and needs prior authorization.
Medicare, Medicaid and telepractice
Medicare requires modifier GN on every outpatient speech-language pathology line, a certified plan of care, and modifier KX once a patient’s yearly spending passes the threshold that speech therapy shares with physical therapy. Pediatric Medicaid and EPSDT coverage usually requires authorization for each episode with re-evaluation, and school-based services are billed separately from clinic services. Many payers cover speech therapy by telepractice with their own place-of-service and modifier rules, which change often. See prior authorization services.