G47.42 Narcolepsy in conditions classified elsewhere

Non-billable header with 2 child codes.

Code first

• underlying condition

Applies from G47 Sleep disorders

Excludes2 (not included here)

• nightmares (F51.5)
• nonorganic sleep disorders (F51.-)
• sleep terrors (F51.4)
• sleepwalking (F51.3)

Codes under G47.42

• G47.421 Narcolepsy in conditions classified elsewhere with cataplexy
• G47.429 Narcolepsy in conditions classified elsewhere without cataplexy

Code annotations containing back-references to G47.42

Back-references to G47.4

• Type 2 Excludes: F51.1 Hypersomnia not due to a substance or known physiological condition ("narcolepsy (G47.4-)")

Back-references to G47

• Type 2 Excludes: F51 Sleep disorders not due to a substance or known physiological condition ("organic sleep disorders (G47.-)")

Nearby codes

• G47.39 Other sleep apnea
• G47.4 Narcolepsy and cataplexy
• G47.41 Narcolepsy
• G47.411 Narcolepsy with cataplexy
• G47.419 Narcolepsy without cataplexy
• G47.42 Narcolepsy in conditions classified elsewhere (this code)
• G47.421 Narcolepsy in conditions classified elsewhere with cataplexy
• G47.429 Narcolepsy in conditions classified elsewhere without cataplexy
• G47.5 Parasomnia
• G47.50 Parasomnia, unspecified
• G47.51 Confusional arousals