2020 ICD-10-CM Diagnosis Code F51.01

Primary insomnia

    2016 2017 2018 2019 2020 Billable/Specific Code
  • F51.01 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 F51.01 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of F51.01 - other international versions of ICD-10 F51.01 may differ.
Applicable To
  • Idiopathic insomnia
The following code(s) above F51.01 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 F51.01:
  • 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
  • F51.0
    ICD-10-CM Diagnosis Code F51.0

    Insomnia not due to a substance or known physiological condition

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Insomnia not due to a substance or known physiological condition
Approximate Synonyms
  • Idiopathic insomnia
  • Insomnia, idiopathic
  • Insomnia, nonorganic
  • Insomnia, primary
  • Non-organic persistent disorder in initiating or maintaining sleep
  • Nonorganic insomnia
  • Primary hyposomnia
  • Sleep disorder, initiating or maintaining, persistent, nonorganic
Clinical Information
  • A sleep disorder characterized by difficulty initiating or maintaining sleep; this difficulty does not occur in the context of another sleep disorder and is not etiologically linked to a mental disorder, substance use, or a general medical condition.
ICD-10-CM F51.01 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 887 Other mental disorder diagnoses

Convert F51.01 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 F51.01:

Diagnosis Index entries containing back-references to F51.01:

ICD-10-CM Codes Adjacent To F51.01
F50.01 …… restricting type
F50.02 …… binge eating/purging type
F50.2 Bulimia nervosa
F50.8 Other eating disorders
F50.81 Binge eating disorder
F50.82 Avoidant/restrictive food intake disorder
F50.89 Other specified eating disorder
F50.9 Eating disorder, unspecified
F51 Sleep disorders not due to a substance or known physiological condition
F51.0 Insomnia not due to a substance or known physiological condition
F51.01 Primary insomnia
F51.02 Adjustment insomnia
F51.03 Paradoxical insomnia
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

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