ICD-10 Code F45.20 – Hypochondriacal disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F45.20 – Hypochondriacal disorder, unspecified
What it is
F45.20 identifies an unspecified hypochondriacal disorder, meaning persistent preoccupation with having a serious illness without enough evidence for a specific subtype. Use it when the record supports illness anxiety concerns but does not give a more precise diagnosis.
Clinical signs
Typical documentation includes excessive worry about health, repeated checking or reassurance-seeking, and ongoing fear of disease despite limited findings. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents hypochondriacal disorder or illness anxiety-type concerns and does not specify another somatic symptom-related diagnosis. It also fits when the note describes persistent fear of serious illness with no clearer subtype. Check documentation if the record is vague or uses older terminology.
Do not use for
Do not use it when the provider documents a different somatic symptom disorder, a confirmed medical illness, or a factitious presentation. If the chart only mentions general anxiety about health, check documentation.
Coding tip
Code the diagnosis exactly as documented and confirm whether the provider intended a more specific somatic symptom-related disorder.