Sleep apnea icd 9 July 8, 2019 16 32 64 128 Sleep apnea icd 9 code Obstructive sleep apnea icd 9 Obstructive sleep apnea icd 9 code Sleep apnea syndrome icd 9 Central sleep apnea icd 9 Sleep apnea hypopnea syndrome icd 9 Severe obstructive sleep apnea icd 9 Obstructive sleep apnea syndrome icd 9