| G47 | Sleep disorders | NON-BILLABLE CODE |
| G47.0 | Insomnia | NON-BILLABLE CODE |
| G47.00 | Insomnia, unspecified | BILLABLE CODE |
| G47.01 | Insomnia due to medical condition | BILLABLE CODE |
| G47.09 | Other insomnia | BILLABLE CODE |
| G47.1 | Hypersomnia | NON-BILLABLE CODE |
| G47.10 | Hypersomnia, unspecified | BILLABLE CODE |
| G47.11 | Idiopathic hypersomnia with long sleep time | BILLABLE CODE |
| G47.12 | Idiopathic hypersomnia without long sleep time | BILLABLE CODE |
| G47.13 | Recurrent hypersomnia | BILLABLE CODE |
| G47.14 | Hypersomnia due to medical condition | BILLABLE CODE |
| G47.19 | Other hypersomnia | BILLABLE CODE |
| G47.2 | Circadian rhythm sleep disorders | NON-BILLABLE CODE |
| G47.20 | Circadian rhythm sleep disorder, unspecified type | BILLABLE CODE |
| G47.21 | Circadian rhythm sleep disorder, delayed sleep phase type | BILLABLE CODE |
| G47.22 | Circadian rhythm sleep disorder, advanced sleep phase type | BILLABLE CODE |
| G47.23 | Circadian rhythm sleep disorder, irregular sleep wake type | BILLABLE CODE |
| G47.24 | Circadian rhythm sleep disorder, free running type | BILLABLE CODE |
| G47.25 | Circadian rhythm sleep disorder, jet lag type | BILLABLE CODE |
| G47.26 | Circadian rhythm sleep disorder, shift work type | BILLABLE CODE |
| G47.27 | Circadian rhythm sleep disorder in conditions classified elsewhere | BILLABLE CODE |
| G47.29 | Other circadian rhythm sleep disorder | BILLABLE CODE |
| G47.3 | Sleep apnea | NON-BILLABLE CODE |
| G47.30 | Sleep apnea, unspecified | BILLABLE CODE |
| G47.31 | Primary central sleep apnea | BILLABLE CODE |
| G47.32 | High altitude periodic breathing | BILLABLE CODE |
| G47.33 | Obstructive sleep apnea (adult) (pediatric) | BILLABLE CODE |
| G47.34 | Idiopathic sleep related nonobstructive alveolar hypoventilation | BILLABLE CODE |
| G47.35 | Congenital central alveolar hypoventilation syndrome | BILLABLE CODE |
| G47.36 | Sleep related hypoventilation in conditions classified elsewhere | BILLABLE CODE |
| G47.37 | Central sleep apnea in conditions classified elsewhere | BILLABLE CODE |
| G47.39 | Other sleep apnea | BILLABLE CODE |
| G47.4 | Narcolepsy and cataplexy | NON-BILLABLE CODE |
| G47.41 | Narcolepsy | NON-BILLABLE CODE |
| G47.411 | Narcolepsy with cataplexy | BILLABLE CODE |
| G47.419 | Narcolepsy without cataplexy | BILLABLE CODE |
| G47.42 | Narcolepsy in conditions classified elsewhere | NON-BILLABLE CODE |
| G47.421 | Narcolepsy in conditions classified elsewhere with cataplexy | BILLABLE CODE |
| G47.429 | Narcolepsy in conditions classified elsewhere without cataplexy | BILLABLE CODE |
| G47.5 | Parasomnia | NON-BILLABLE CODE |
| G47.51 | Confusional arousals | BILLABLE CODE |
| G47.52 | REM sleep behavior disorder | BILLABLE CODE |
| G47.53 | Recurrent isolated sleep paralysis | BILLABLE CODE |
| G47.54 | Parasomnia in conditions classified elsewhere | BILLABLE CODE |
| G47.59 | Other parasomnia | BILLABLE CODE |
| G47.6 | Sleep related movement disorders | NON-BILLABLE CODE |
| G47.61 | Periodic limb movement disorder | BILLABLE CODE |
| G47.62 | Sleep related leg cramps | BILLABLE CODE |
| G47.63 | Sleep related bruxism | BILLABLE CODE |
| G47.69 | Other sleep related movement disorders | BILLABLE CODE |
| G47.8 | Other sleep disorders | BILLABLE CODE |
| G47.9 | Sleep disorder, unspecified | BILLABLE CODE |
