2020 ICD-10-CM Diagnosis Code F51.5

Nightmare disorder

    2016 2017 2018 2019 2020 Billable/Specific Code
  • F51.5 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM F51.5 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of F51.5 - other international versions of ICD-10 F51.5 may differ.
Applicable To
  • Dream anxiety disorder
The following code(s) above F51.5 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to F51.5:
  • F01-F99
    2020 ICD-10-CM Range F01-F99

    Mental, Behavioral and Neurodevelopmental disorders

    Includes
    • disorders of psychological development
    Type 2 Excludes
    • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
    Mental, Behavioral and Neurodevelopmental disorders
  • F51
    ICD-10-CM Diagnosis Code F51

    Sleep disorders not due to a substance or known physiological condition

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • organic sleep disorders (G47.-)
    Sleep disorders not due to a substance or known physiological condition
Approximate Synonyms
  • Dream anxiety disorder
Clinical Information
  • A sleep disorder characterized by the repeated occurrence of frightening dreams which precipitate awakenings from sleep; on awakening, the individual becomes fully alert and oriented and has detailed recall of the nightmare, which usually involves imminent danger or extreme embarrassment to the individual.
ICD-10-CM F51.5 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 887 Other mental disorder diagnoses

Convert F51.5 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to F51.5:
  • Type 2 Excludes: G47
    ICD-10-CM Diagnosis Code G47

    Sleep disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes

Diagnosis Index entries containing back-references to F51.5:
  • Disorder (of) - see also Disease
    • sleep G47.9
      ICD-10-CM Diagnosis Code G47.9

      Sleep disorder, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Sleep disorder NOS
      • Unspecified sleep-wake disorder
      • nightmares F51.5
    • dream anxiety F51.5
    • nightmare F51.5
  • Nightmares F51.5 (REM sleep type)

ICD-10-CM Codes Adjacent To F51.5
F51.04 Psychophysiologic insomnia
F51.05 Insomnia due to other mental disorder
F51.09 Other insomnia not due to a substance or known physiological condition
F51.1 Hypersomnia not due to a substance or known physiological condition
F51.11 Primary hypersomnia
F51.12 Insufficient sleep syndrome
F51.13 Hypersomnia due to other mental disorder
F51.19 Other hypersomnia not due to a substance or known physiological condition
F51.3 Sleepwalking [somnambulism]
F51.4 Sleep terrors [night terrors]
F51.5 Nightmare disorder
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
F52 Sexual dysfunction not due to a substance or known physiological condition
F52.0 Hypoactive sexual desire disorder
F52.1 Sexual aversion disorder
F52.2 Sexual arousal disorders
F52.21 Male erectile disorder
F52.22 Female sexual arousal disorder
F52.3 Orgasmic disorder
F52.31 Female orgasmic disorder

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.