Delusional Disorder ICD-10-CM Codes | 2023

Delusional Disorder ICD-10-CM Codes | 2023

Read this short guide to learn about Delusional Disorder ICD codes you can use!

By Patricia Buenaventura on Jul 16, 2025.

Fact Checked by Ericka Pingol.

Use Code

What Delusional Disorder ICD-10 codes can I use?

If you’re looking for Delusional Disorder ICD codes, there’s only one: F22 - Delusional disorders.

It’s straightforward. It’s meant to be used on a patient confirmed to have a delusional disorder.

If you have a patient who is highly paranoid or has strange beliefs, like someone famous (let’s go with Chris Evans, for example) is in love with them even though that person doesn’t know the patient, you can use this ICD-10 code.

Is this lone Delusional Disorder ICD-10 code billable?

Yes. This ICD-10 code for Delusional Disorder is valid and billable.

Clinical information about Delusional Disorder:

Delusional Disorder is a type of mental health condition characterized by the inability to tell what is real and what isn’t, including believing something that is untrue to be true.

More often than not, there is enough evidence to debunk what is perceived as real, unreal, true, and untrue, but those with Delusional Disorder will ignore the evidence.

Delusional Disorder is not to be confused with Schizophrenia. The latter can disrupt a person’s life entirely, while the latter doesn’t. Those with Delusional Disorder still function well enough to continue their lives with little to no problems caused by their delusions.

There are five types of Delusional Disorder:

  • Persecutory: those who have this kind often believe that someone or something is watching or actively trying to harm them or their loved ones
  • Grandiose: those who have this kind often believe they are someone important, that they are smarter and more powerful than others
  • Erotomaniac: those who have this kind often believe that someone is in love with them, even though that someone doesn’t
  • Jealous: those who have this kind often believe their partner is unfaithful to them despite having no evidence
  • Somatic: those who have this kind often believe they have a physical or medical problem even if they don’t have any symptoms or underlying conditions

Some people have a mixture of two or more of these Delusional Disorder types.

Synonyms include:

  • Paranoid delusion
  • Paranoid disorder
  • Paranoid ideation
  • Delusion of control of handwriting
  • Delusion of control of voice
  • Delusion of grandiose ability
  • Delusion of grandiose identity
  • Delusion of own appearance
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