Prior authorization for a sleep study
Sleep study requests rise or fall on two points: how likely sleep-disordered breathing is from the history and screening scores, and, for an attended study in a laboratory, why a home test will not do. A note that captures the bed partner's account, the scores and the comorbidities makes both points without extra work.
What reviewers usually ask for
- Symptoms: loud snoring, witnessed pauses in breathing, choking or gasping at night, unrefreshing sleep, morning headache, daytime sleepiness.
- A sleepiness scale score, such as the Epworth Sleepiness Scale, and a validated screening questionnaire for obstructive sleep apnoea.
- Body mass index and neck circumference.
- Relevant conditions: hypertension that is hard to control, atrial fibrillation, heart failure, stroke, type 2 diabetes.
- Safety-sensitive factors, such as drowsy driving or a job that involves driving or machinery.
- For an attended study: the reason a home sleep apnoea test is unsuitable.
Home test or attended study
Many review criteria treat a home sleep apnoea test as the default for adults with a high likelihood of uncomplicated obstructive sleep apnoea. An attended polysomnography request needs a reason. Common documented reasons include significant heart or lung disease, a neuromuscular condition, suspected central sleep apnoea or hypoventilation, long-term opioid use, suspicion of another sleep disorder such as narcolepsy or parasomnia, or a previous home test that was technically inadequate or negative despite strong symptoms.
If none of these apply, request the home test. If one does, name it in the letter with the supporting finding.
Example
Request: Attended polysomnography (95810). Diagnoses: Snoring (R06.83); hypersomnia, unspecified (G47.10); chronic obstructive pulmonary disease (J44.9). [Patient initials], 59. The patient's spouse reports loud nightly snoring and pauses in breathing several times a night for over a year. Epworth Sleepiness Scale 15. Screening questionnaire high risk. BMI 34, neck circumference 44 cm. The patient has COPD with FEV1 48% predicted on spirometry this year and resting oxygen saturation of 92% on room air. Because of moderate to severe lung disease and borderline resting saturation, a home test may not distinguish obstructive events from hypoventilation. An attended study is requested to characterise the breathing disorder and guide the choice of treatment.
The excerpt gives the reviewer the probability argument and the reason for the laboratory setting in separate, short paragraphs.
Refusals and how the note heads them off
| Refusal reason | What prevents it |
|---|---|
| Symptoms not described | Bed partner's account, duration and the specific symptoms |
| No screening score | Sleepiness scale and apnoea screening results in the note |
| Attended study not justified | The comorbidity or prior test result that rules out a home test |
| Titration study requested without a diagnostic result | The date and key values of the diagnostic study |
Drafting it with ClearPass
Transcribe the consultation with the patient's agreement, including the partner's account if they attend, or type the history. ClearPass writes the clinical note and, from it, the sleep study justification with ICD-10 and procedure codes. If the note has no sleepiness score, it asks for one before writing, or lists it as a gap if you have questions switched off. Once the study confirms obstructive sleep apnoea (G47.33), the same note history supports later requests for positive airway pressure equipment. You remain the author of every letter. For daily clinic notes see AI scribe for sleep medicine.
What ClearPass does not do
- It does not replace your judgement. Every note is an AI draft that you review and correct before it is used.
- It is not a medical device and does not make clinical decisions. It is a documentation aid.
- It does not connect to your EMR. The note is copy-ready text that pastes into any system.
Privacy
Clinical note content is not stored on ClearPass servers: it is processed to write the note, then discarded. Consultation audio is transcribed and discarded, never stored. Your note history stays in your browser, on your device, and you choose how long it is kept. Common identifiers are removed from typed and transcribed text before it reaches the AI; that is a best-effort safeguard, so leave names, ID numbers and file numbers out where you can. Processing goes through the AI providers named in our Privacy Policy, which sets out exactly what each one receives and how long it keeps it. ClearPass does not sign HIPAA business associate agreements today.
Questions
Should I code obstructive sleep apnoea before the study?
Generally no. Before a diagnostic study, code the symptoms, such as snoring or hypersomnia. Use the sleep apnoea code once the study confirms it.
Can ClearPass write the equipment request after the study?
Yes. From the follow-up note that includes the study result, it can draft a letter of medical necessity for the equipment you prescribe.
Does it work for paediatric sleep studies?
It drafts from whatever the note documents. Paediatric criteria differ from adult ones, so make sure the note states the relevant history, examination and growth findings.
What if a home test was negative but symptoms are strong?
Say so in the request, with the date, the device used and why the result may be a false negative, such as a short valid sleep time or a technically poor study. That is one of the usual reasons an attended study is considered.
What does ClearPass cost?
The 7-day trial is free, needs no card and simply ends after 7 days, with no automatic charge. After that there is one plan: $78 a month or $858 a year, with every visit transcribed.
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