ICD-10-CM code · FY2027
F45.21 Hypochondriasis
BillableValid for claims as a specific diagnosis code
About F45.21
- Code
- F45.21
- Billable
- Yes
- Short description
- Hypochondriasis
- Category
- F45 Somatoform disorders
- Block
- F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
- Chapter
- 5 Mental, Behavioral and Neurodevelopmental disorders
- Code set
- FY2027, October 1, 2026 to September 30, 2027
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Coding notes for F45.21
Applicable to Other names for conditions reported with this code.
- Hypochondriacal neurosis
- Illness anxiety disorder
Also applies, from F45.2 Hypochondriacal disorders
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
Also applies, from F45 Somatoform disorders
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- dissociative and conversion disorders (F44.-)
- factitious disorders (F68.1-, F68.A)
- hair-plucking (F63.3)
- lalling (F80.0)
- lisping (F80.0)
- malingering [conscious simulation] (Z76.5)
- nail-biting (F98.8)
- psychological or behavioral factors associated with disorders or diseases classified elsewhere (F54)
- sexual dysfunction, not due to a substance or known physiological condition (F52.-)
- thumb-sucking (F98.8)
- tic disorders (in childhood and adolescence) (F95.-)
- Tourette's syndrome (F95.2)
- trichotillomania (F63.3)
Chapter 5 notes (apply to every code in it)
Includes Conditions this code covers.
- disorders of psychological development
Related codes in F45.2
Latest research on somatic symptom disorder
- 2 Minute Medicine Rewind March 31, 2025
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- Physical activity may be helpful in treating depressive symptoms in children and adolescents
- 2 Minute Medicine Rewind January 9, 2023
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See 2MM+ plansICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.
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