F51.5 - Nightmare disorder

The ICD 10 Code for Nightmare disorder is listed as F51.5.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field	Value
Diagnosis Code:	F51.5
Description:	Nightmare disorder Dream anxiety disorder
Diagnostic Related Groups (MS-DRG v30.0)	887 - Other Mental Disorder Diagnoses

Chapter	Mental and behavioral disorders (F01-F99)
Block	Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59)
Parent	F51 - Sleep disorders not due to a substance or known physiological condition
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code:	307.47 - Other dysfunctions of sleep stages or arousal from sleep (approximate)
ICD-10-CM Siblings (same level / similar specificity) of F51.5:
F51.0 - Insomnia not due to a substance or known physiological condition
F51.1 - Hypersomnia not due to a substance or known physiological condition
F51.3 - Sleepwalking [somnambulism]
F51.4 - Sleep terrors [night terrors]
F51.8 - Other sleep disorders not due to a substance or known physiological condition
F51.9 - Sleep disorder not due to a substance or known physiological condition, unspecified