ICD-10-CM Code for Suspected Obstructive Sleep Apnea
For a provisional diagnosis of suspected obstructive sleep apnea, use ICD-10-CM code G47.33 1, 2, 3.
Code Specification
- G47.33 is the specific ICD-10-CM code for obstructive sleep apnea (OSA) 1, 2, 3
- This code has been validated across multiple health systems in the United States with excellent predictive characteristics 3
- The code applies whether the diagnosis is confirmed or provisional/suspected 3
Clinical Context for Code Usage
When documenting suspected OSA, this code should be used even before polysomnography confirmation, as it allows for:
- Appropriate screening and evaluation pathways in hospitalized patients 4
- Insurance authorization for diagnostic sleep studies 4
- Risk stratification for patients requiring noninvasive positive pressure ventilation 4
- Identification of patients at increased risk for rapid response team events and escalation of care 4
Validation Evidence
- A multisite validation study demonstrated that ICD-10 code G47.33 has a positive predictive value of 97.1% and negative predictive value of 95.5% when used ≥2 times in the electronic health record 3
- The code performs consistently across different healthcare systems with all estimates ≥90% 3
Important Coding Considerations
Do not confuse with related codes:
- G47.30 (sleep apnea, unspecified) - less specific and should be avoided when OSA is suspected 3
- G47.39 (other sleep apnea) - used for non-obstructive types 3
The G47.33 code is appropriate for provisional diagnosis because clinical suspicion based on symptoms (nocturnal awakenings, nocturia, unrefreshing sleep, daytime sleepiness, morning headaches) warrants documentation and initiation of the diagnostic pathway 5.