ModifiedUnitedHealthcarePolicy CS098.AC

Sleep Studies (HSAT and Polysomnography)

Medical policy governing indications, settings, and criteria for home sleep apnea testing (HSAT), attended full-channel polysomnography (PSG), daytime sleep studies, PAP titration, and repeat testing for individuals with suspected sleep disorders. Affects providers performing sleep testing and UnitedHealthcare coverage determinations.

Policy Summary

PayerUnitedHealthcare

PolicySleep Studies (HSAT and Polysomnography)

Policy CodePolicy CS098.AC

Change TypeOperational updatesstate applicability changes

Effective DateMar 1, 2025

Next Review Date

Key ActionWhen HSAT is indicated for adults with suspected OSA, an autotitrating PAP (APAP) device may be used to determine fixed PAP pressure.

SourceLink

POLICY UPDATE CHANGES

Updated list of medical records documentation used for reviews; added 'history of chronic (> 3 months) opiate use, including frequency, dose, and duration'.

Added language indicating this Medical Policy does not apply to the states of Idaho and Kansas and added a reference link for Nebraska.

Removed content/language pertaining to the state of Mississippi.

Template update performed.

MultipleCovered study types

~20Definitions

3–33%Reported data loss

41%

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Night-to-night AHI change

Certain testsNot medically necessary

Coverage Criteria for Sleep Studies

Home Sleep Apnea Testing (HSAT) — Adults

Covered when ALL of the following are met:

HSAT for suspected OSA in adults: HSAT using a portable monitor is medically necessary for evaluating adults with suspected obstructive sleep apnea (OSA).

Where HSAT is indicated, an autotitrating PAP (APAP) device may be used as an option to determine a fixed PAP pressure.

Attended Full-Channel Polysomnography — Indications

Attended PSG is medically necessary in individuals with suspected OSA when ANY of the following apply (OR logic across bullet categories where noted):

PSG when HSAT inadequate or contraindicated: Results of previous HSAT are negative, indeterminate, or technically inadequate to make a diagnosis of OSA; or individual is a child or adolescent (<18 years); or individual has comorbid conditions that prohibit the use of a HSAT.

Comorbid conditions include significant chronic pulmonary disease (FEV1% predicted <60), progressive neuromuscular disease, NYHA class III/IV heart failure or LVEF ≤40, BMI >50, obesity hypoventilation syndrome, documented ongoing epileptic seizures with sleep disorder symptoms, and chronic opiate use >3 months.

PSG for other sleep disorders: PSG is medically necessary for evaluation of Periodic Limb Movement Disorder (PLMD), treatment-refractory Restless Legs Syndrome (RLS), parasomnia with disruptive or violent behavior suspicious for REM sleep behavior disorder (RBD), narcolepsy (after other causes excluded), and Central Sleep Apnea; and to rule out CSA prior to implantation/calibration of hypoglossal nerve stimulator.

Refer to related policies for stimulator indications.

Daytime Sleep Studies (MSLT)

Covered when ALL of the following are met:

MSLT for narcolepsy/idiopathic hypersomnia: MSLT (Multiple Sleep Latency Test) is medically necessary when suspected narcolepsy or idiopathic hypersomnia and other causes of excessive sleepiness have been excluded by appropriate clinical assessment.

For medical necessity clinical coverage criteria, refer to InterQual Procedures: Sleep Studies.

Attended PAP Titration

PAP titration during attended PSG: A split-night study for diagnosis and PAP titration or a full-night study for PAP titration (when split-night is inadequate or not feasible) is medically necessary when the individual meets criteria for attended PSG and has confirmed OSA.

Split-night protocols are suggested by AASM when clinically appropriate; see Attended Repeat Testing for repeat-titration considerations.

Attended Repeat Testing

Repeat PSG/PAP titration: Repeat attended full-channel polysomnography and repeat PAP titration are medically necessary for individuals with persistent or new symptoms despite documented appropriate current treatment or PAP therapy after issues such as equipment failure, improper mask fit, leaks, unsuccessful titration, inadequate pressure, and medical problems have been addressed and managed.

Repeat testing and oral appliance adjustments may be performed at home unless the individual meets criteria for an attended study.

Diagnostic and device adequacy criteria

Diagnosis of OSA per AASM/American Thoracic Society guidance

OSA diagnostic thresholds: OSA is confirmed if obstructive events on PSG are >15 events/hour in the absence of associated symptoms OR >5 events/hour in an individual reporting symptoms (unintentional sleep episodes, daytime sleepiness, unrefreshing sleep, fatigue, insomnia, waking gasping/choking, or partner-reported loud snoring/breathing interruptions).AHI>15 or AHI>5 with symptoms

Per AASM (Epstein et al., 2009).

HSAT adequacy: Adequate HSAT is defined as a minimum of 4 hours of adequate recording and includes nasal pressure, chest and abdominal respiratory inductance plethysmography (RIP), and oximetry.>=4 hours and specified sensors

Kapur et al., 2017 and device guidance per Collop et al., 2011.

Device measurement guidance: Certain signal configurations are inadequate or require specific montages: thermistor alone without effort sensors is inadequate; if thermal sensing is sole respiration measure, two effort belts are required; nasal pressure may be adequate but can be device-specific; peripheral arterial tonometry (PAT) devices are considered adequate for proposed use. Evidence is insufficient for some signal combinations.

Use of HSAT versus PSG

Covered when criteria below are met

Primary coverage logic

When to prefer PSG over HSAT: Use PSG for patients with significant cardiorespiratory disease, potential respiratory muscle weakness due to neuromuscular condition, awake hypoventilation or suspected sleep-related hypoventilation, chronic opioid use, history of stroke, or severe insomnia.
AASM strong recommendations.
When HSAT appropriate: HSAT may be used in uncomplicated adult patients with signs or symptoms indicating increased risk of moderate to severe OSA when a technically adequate device is available and testing is performed within an appropriate clinical management pathway.
Supported by evidence showing single-night HSAT is sufficient for most high pretest-probability patients.

VA/DoD HSAT criteria for moderate-severe OSA

Covered when ALL of the following are met

VA/DoD suggested HSAT criteria: Patient has high pretest probability for OSA AND a manually-scored type III HSAT (unattended portable monitor) is used with an event index (RDI/AHI) ≥ 15 events/hour to establish the diagnosis of moderate to severe OSA.>= 15 events/hour

VA/DoD guideline suggestion; if HSAT is non-diagnostic, repeat testing (HSAT or PSG) is recommended.

Attended full‑channel polysomnography (PSG) for the evaluation of circadian rhythm disorders, depression, or insomnia is considered not medically necessary due to insufficient evidence of efficacy. In addition, actigraphy for the evaluation of any sleep disorder is considered not medically necessary for the same reason.

The inclusion of a procedure code in this policy is for informational reference only and does not by itself indicate that the service represented by the code is covered. Coverage and reimbursement determinations are governed by applicable federal and state law, the member’s benefit contract, and other UnitedHealthcare policies; inclusion of a code does not guarantee payment.

Home Sleep Apnea Testing (HSAT) is not an appropriate substitute for attended PSG in patients with significant cardiopulmonary disease, suspected or proven respiratory muscle weakness from neuromuscular disease, awake hypoventilation or suspected sleep‑related hypoventilation, chronic opioid use, prior stroke, or severe insomnia. When HSAT is negative, inconclusive, or technically inadequate, the American Academy of Sleep Medicine (AASM) recommends proceeding to attended PSG rather than repeating HSAT.

This Medical Policy does not apply to the states of Idaho and Kansas. For those states (and any other state‑specific variations), refer to the applicable state‑specific UnitedHealthcare policy version.

Evidence is insufficient to support the use of attended full‑channel PSG for evaluation of circadian rhythm disorders, depression, or insomnia. Likewise, current evidence does not support the use of actigraphy to evaluate sleep disorders; these modalities are therefore considered not medically necessary for those indications.

The technology evaluation and clinical literature are inadequate to support certain limited‑signal device configurations. For example, a thermistor alone without an effort sensor is not considered adequate to diagnose OSA, and when thermal sensing is the sole respiration measure, two effort belts are required. Evidence is device‑specific and inadequate to state with confidence that some single or limited signal combinations are sufficient for diagnosis.

Routine performance of more than a single night of HSAT is not supported by available evidence. Although multiple‑night recording may reduce data loss or marginally improve accuracy in limited studies, the AASM and task force concluded there is insufficient evidence to recommend routinely performing multiple‑night HSAT. If a single HSAT is negative, inconclusive, or technically inadequate, repeating HSAT is not recommended; instead, attended PSG is strongly advised.

Procedure Codes and Severity Thresholds

CPT codes referenced for Missouri considerationsCPT

95805	Attended polysomnography
95807	Attended polysomnography with multiple parameters
95808	Polysomnography with initiation of continuous positive airway pressure
95810	Polysomnography with multiple sleep latency or other parameters
95811	Polysomnography with extended parameters

Pediatric attended polysomnography codesCPT

95782	Polysomnography; younger than 6 years, sleep staging with 4 or more additional parameters of sleep, attended by a technologist.
95783	Polysomnography; younger than 6 years, sleep staging with 4 or more additional parameters of sleep, with initiation of continuous positive airway pressure therapy or bi-level ventilation, attended by a technologist.

Adult/unattended/attended sleep study and related codesCPT

95800	Sleep study, unattended, simultaneous recording; heart rate, oxygen saturation, respiratory analysis (e.g., by airflow or peripheral arterial tone), and sleep time.
95801	Sleep study, unattended, simultaneous recording; minimum of heart rate, oxygen saturation, and respiratory analysis (e.g., by airflow or peripheral arterial tone).
95803	Actigraphy testing, recording, analysis, interpretation, and report (minimum of 72 hours to 14 consecutive days of recording).
95805	Multiple sleep latency or maintenance of wakefulness testing, recording, analysis and interpretation of physiological measurements of sleep during multiple trials to assess sleepiness.
95806	Sleep study, unattended, simultaneous recording of, heart rate, oxygen saturation, respiratory airflow, and respiratory effort (e.g., thoracoabdominal movement).
95807	Sleep study, simultaneous recording of ventilation, respiratory effort, ECG or heart rate, and oxygen saturation, attended by a technologist.
95808	Polysomnography; any age, sleep staging with 1-3 additional parameters of sleep, attended by a technologist.
95810	Polysomnography; age 6 years or older, sleep staging with 4 or more additional parameters of sleep, attended by a technologist.
95811	Polysomnography; age 6 years or older, sleep staging with 4 or more additional parameters of sleep, with initiation of continuous positive airway pressure therapy or bilevel ventilation, attended by a technologist.

OSA severity thresholds (AHI or RDI)

Mild OSAAHI or RDI ≥5 and <15 events/hour

Moderate OSAAHI or RDI ≥15 and ≤30 events/hour

Severe OSAAHI or RDI >30 events/hour

Event index threshold for moderate-severe OSA

Event index threshold>= 15 events/hour (RDI or AHI) to establish moderate‑to‑severe OSA in high pretest‑probability patients

ContextRecommendation from VA/DoD guidelines for manually‑scored type III HSAT

Provider Actions, Documentation, and Billing Notes

Prior Authorization

Missouri outpatient PSG considerations

Missouri outpatient PSG considerations: Attended full‑channel nocturnal polysomnography performed in an outpatient hospital health care facility must be medically necessary. When assessing whether the study must be performed in that setting versus a more cost‑effective setting, reviewers will consider the state Medicaid contract, any applicable federal or state requirements, geographic availability of an in‑network provider, and laboratory capability. This state requirement specifically applies to CPT codes 95805, 95807, 95808, 95810, and 95811.

Applies to CPT codes: 95805, 95807, 95808, 95810, 95811

Note

Procedure codes referenced (coverage may vary)

Procedure and diagnosis codes listed in this policy are provided for reference only and do not alone determine coverage or reimbursement. Inclusion of a code does not imply the service is covered, and benefit coverage is determined by federal, state, or contractual requirements and applicable law.

Codes are informational only; check benefit/contractual requirements and other policies

Background and Rationale

Obstructive and central sleep‑disordered breathing are diagnosed using sleep testing modalities that include home sleep apnea testing (HSAT) and attended full‑channel polysomnography (PSG). HSAT devices are unattended and do not determine sleep stage; adequate HSAT generally requires at least 4 hours of technically adequate recording with specified sensors. PSG is the standard diagnostic test in patients with concerning comorbidities or when HSAT is inadequate. Daytime studies such as the Multiple Sleep Latency Test (MSLT) are used to evaluate disorders of hypersomnolence after other causes of excessive sleepiness have been excluded.

Definitions

Apnea

DefinitionCessation of airflow (≥90% decrease vs baseline) lasting at least 10 seconds

Obstructive apneaContinued or increased inspiratory effort throughout the period of absent airflow

Central apneaAbsent inspiratory effort throughout the period of absent airflow

Mixed apneaAbsent inspiratory effort in the initial portion followed by resumption of inspiratory effort in the second portion

Apnea Hypopnea Index (AHI)

AHI definitionNumber of apneas plus hypopneas during the entire sleeping period, times 60, divided by total sleep time (events per hour)

Unit

Policy Revision History

2025-07-01operational/templateLatest

Template update and removal of content/language pertaining to the state of Mississippi.

2025-06-01state applicability

Added language indicating the Medical Policy does not apply to the states of Idaho and Kansas; directed readers to state-specific policy versions.

2025-04-01state applicability

Policy Summary

PayerUnitedHealthcare

PolicySleep Studies (HSAT and Polysomnography)

Policy CodePolicy CS098.AC

Change TypeOperational updatesstate applicability changes

Effective DateMar 1, 2025

Next Review Date

Key ActionWhen HSAT is indicated for adults with suspected OSA, an autotitrating PAP (APAP) device may be used to determine fixed PAP pressure.

SourceLink

On This Page

device-specific criteria

Based on Collop et al., 2011 technology evaluation.

Action when non‑diagnostic

If HSAT is non‑diagnostic, repeat HSAT or laboratory PSG is recommended per VA/DoD guidance

Note

Type III HSAT for moderate–severe OSA (VA/DoD guidance)

VA/DoD guidance for high pretest probability of OSA: a manually‑scored Type III HSAT (unattended portable monitor) using an event index (RDI or AHI) ≥ 15 events/hour may be used to establish a diagnosis of moderate‑to‑severe OSA. For high pretest probability with non‑diagnostic HSAT (technically inadequate or AHI < 5), repeat testing (HSAT or lab‑based PSG) is recommended per VA/DoD.

Type III HSAT manually scored; diagnostic threshold: event index ≥ 15 events/hour
If HSAT non‑diagnostic in high pretest probability → repeat HSAT or PSG

Note

State‑specific application

State‑specific application: This policy may not apply uniformly across all states. Refer to the state‑specific policy versions for Idaho, Kansas, and Nebraska. In case of conflict, federal, state, or contractual requirements govern coverage.

Policy does not apply to Idaho and Kansas (see state‑specific versions)
Refer to Nebraska state‑specific version as applicable

Denial Risk

Claims for attended full‑channel polysomnography

Claims for attended full‑channel polysomnography: Attended full‑channel PSG is not medically necessary for evaluation of circadian rhythm disorders, depression, or insomnia; actigraphy is not medically necessary for any sleep disorders. Submit supporting clinical documentation if an attended PSG is requested for these indications to justify exception.

Attended full‑channel PSG NOT medically necessary for: circadian rhythm disorders, depression, insomnia
Actigraphy NOT medically necessary for any sleep disorder

Note

Codes are informational only

Codes are informational only: A listing of CPT/HCPCS/other codes in this policy is for reference and is not a guarantee of coverage or reimbursement. Benefits are determined by the applicable contract, law, and other UnitedHealthcare policies.

See Applicable Codes section for full code lists; inclusion does not imply coverage

Documentation Required

Documentation should show prior appropriate treatment/PAP issues

Documentation should show prior appropriate treatment/PAP issues before repeat attended testing: For repeat attended PSG or PAP titration to be medically necessary, records must document persistent or new symptoms despite appropriate current treatment or resolution of prior PAP/equipment issues (examples: equipment failure, improper mask fit, pressure leaks, unsuccessful titration, inadequate pressure, or medical problems such as nasal congestion have been addressed).

Document prior treatment attempts and resolution of modifiable PAP/equipment issues
Repeat testing indicated only when problems have been addressed or persistent/new symptoms exist

Documentation Required

Comprehensive evaluation and follow‑up

Comprehensive evaluation and follow‑up: Diagnostic testing for suspected OSA should be performed in conjunction with a comprehensive sleep evaluation and adequate follow‑up. PSG is the standard diagnostic test for complex cases or when clinical concern exists per AASM guidance.

Perform diagnostic testing (HSAT or PSG) together with a comprehensive sleep evaluation and ensure follow‑up
PSG preferred/required for complex patients (cardiorespiratory disease, neuromuscular weakness, suspected hypoventilation, chronic opioid use, history of stroke, severe insomnia)

Documentation Required

Medical records documentation

Medical records documentation: Reviewers may request detailed medical records to support medical necessity determinations. Updated documentation should include history, prior treatments, and, if applicable, details of chronic opioid use (>3 months) including frequency, dose, and duration.

Include prior history, treatment attempts, PAP adherence and troubleshooting
If chronic opioid use present (>3 months), provide frequency, dose, and duration

Billing Rule

Where HSAT is indicated for suspected OSA

Where HSAT is indicated for suspected OSA: HSAT is medically necessary for evaluating adults with suspected OSA when appropriate. Adequate HSAT requires at least four hours of monitoring and a minimum set of sensors (nasal pressure, chest and abdominal respiratory effort, and oximetry). When HSAT is indicated, use of an APAP device is an option to determine a fixed PAP pressure.

Minimum HSAT recording time: ≥ 4 hours
Minimum sensors required: nasal pressure, chest and abdominal respiratory inductance plethysmography, and oximetry
APAP may be used to determine fixed PAP pressure when HSAT indicated

Billing Rule

PAP titration / split‑night

PAP titration / split‑night testing: After diagnosis of OSA, attended PAP titration or a split‑night study may be used to determine optimal PAP settings. A split‑night combines diagnostic PSG and PAP titration into a single night when appropriate per AASM recommendations.

Attended PAP titration or split‑night PSG may be used to establish therapeutic pressure
AASM suggests split‑night protocol may be used when clinically appropriate

UseReported frequency of obstructive events used to classify OSA severity

Actigraphy

DefinitionMeasurement of physical activity via a wrist‑worn movement sensor to estimate sleep and wake based on activity levels

Typical useUsed to estimate sleep/wake patterns over multiple days (ICSD‑3‑TR, 2023)

LimitationDoes not directly measure sleep stages or respiratory events

Actigraphy (alternate wording)

DefinitionMeasurement of physical activity using a wrist‑worn sensor to estimate sleep and wakefulness

Recording durationTypically used for longitudinal recording (e.g., days to weeks) rather than single‑night respiratory diagnosis

Clinical roleSupplementary tool; not a substitute for PSG or HSAT for diagnosing OSA

Apnea (alternate entry)

DefinitionCessation of airflow (≥90% decrease vs baseline) lasting at least 10 seconds

Classification basisClassified as obstructive, central, or mixed based on respiratory effort patterns

SourceAASM Scoring Manual, 2023 (policy definitions)

Apnea‑Hypopnea Index (AHI) — alternate

AHI (alternate)Number of apneas plus hypopneas per hour of total sleep time; used to define OSA severity

Related metricRDI may include apneas, hypopneas, and RERAs; REI used for HSAT as surrogate for AHI

RolePrimary index for classifying OSA severity and guiding diagnostic decisions

Home Sleep Apnea Testing (HSAT) definition

DefinitionUnattended diagnostic studies to assess for OSA without determination of sleep stage; also called out‑of‑center testing or portable monitoring

Adequacy criteriaAdequate HSAT requires a minimum of 4 hours of recording and at least nasal pressure, chest and abdominal respiratory inductance plethysmography, and oximetry

LimitationsHSAT does not measure sleep stages and uses REI as a surrogate for AHI when sleep is not directly measured

MSLT — Multiple Sleep Latency Test

DefinitionMultiple Sleep Latency Test (MSLT): daytime sleep study measuring physiological sleep tendency under standardized conditions

IndicationUsed to evaluate suspected narcolepsy or idiopathic hypersomnia after excluding other causes of excessive sleepiness

MethodSeries of nap trials designed to measure sleep latency and REM propensity

Positive Airway Pressure (PAP)

DefinitionPositive Airway Pressure (PAP): a device that delivers pressurized airflow to keep the airway open

Device typesCPAP (fixed), BPAP (bilevel), APAP (autotitrating), and ASV (adaptive servoventilation)

Clinical useEmployed to treat OSA and may be titrated using attended PSG or APAP in home pathways

OSA severity — restated

MildAHI or RDI ≥5 and <15 events/hour

ModerateAHI or RDI ≥15 and ≤30 events/hour

SevereAHI or RDI >30 events/hour

Night‑to‑night variability

DefinitionVariation in respiratory event indices (e.g., AHI/RDI) between sequential nights of sleep testing

Clinical noteGroup‑level variability is often small, but intraindividual variability can be notable (e.g., ~41% showed >10 events/hour change)

ImplicationSingle‑night HSAT usually sufficient for high pretest‑probability patients, but non‑diagnostic results should prompt PSG rather than routine repeat HSAT

Added reference link to the Nebraska state-specific policy version.

2025-03-01medical records documentation

Updated Medical Records Documentation Used for Reviews; added requirement to document history of chronic (> 3 months) opiate use including frequency, dose, and duration.

2025-03-01effective date

Policy effective date established as 2025-03-01 (Supporting information: previous policy version archived).