HCPCS Level II · Procedures and professional services (temporary)
G8842Apnea hypopnea index (ahi), respiratory disturbance index (rdi) or respiratory event index (rei) documented or measured within 2 months after initial evaluation for suspected obstructive sleep apnea
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Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About G8842
G8842 is an HCPCS Level II code in the G series (procedures and professional services (temporary)), describing apnea hypopnea index (ahi), respiratory disturbance index (rdi) or respiratory event index (rei) documented or measured within 2 months after initial evaluation for suspected obstructive sleep apnea.
It was added to HCPCS effective 01/01/2012, and its current record took effect 01/01/2025.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Ahi rdi rei doc win 2mo
- Date added
- 01/01/2012
- Action effective
- 01/01/2025
- BETOS
- M5B
Related G88xx codes
- G8806Performance of trans-abdominal or trans-vaginal ultrasound and pregnancy location documented
- G8807Trans-abdominal or trans-vaginal ultrasound not performed for reasons documented by clinician (e.g., patient has a documented intrauterine pregnancy [iup])
- G8808Trans-abdominal or trans-vaginal ultrasound not performed, reason not given
- G8815Documented reason in the medical records for why the statin therapy was not prescribed (i.e., lower extremity bypass was for a patient with non-artherosclerotic disease)
- G8816Statin medication prescribed at discharge
- G8817Statin therapy not prescribed at discharge, reason not given
- G8826Patient discharged to home no later than post-operative day #2 following evar
- G8833Patient not discharged to home by post-operative day #2 following evar
- G8834Patient discharged to home no later than post-operative day #2 following cea
- G8838Patient not discharged to home by post-operative day #2 following cea
- G8839Sleep apnea symptoms assessed, including presence or absence of snoring and daytime sleepiness
- G8840Documentation of reason(s) for not documenting an assessment of sleep symptoms (e.g., patient didn't have initial daytime sleepiness, patient visited between initial testing and initiation of therapy)
Common questions about G8842
Is HCPCS G8842 still valid?
- Yes. G8842 is active in the CMS October 2026 HCPCS file.
Does Medicare cover G8842?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.