ICD-11 classes
21 Symptoms, signs or clinical findings, not elsewhere...
Mental or behavioural symptoms, signs or clinical findings
MB26 — Symptoms or signs involving content of thought
MB26.0 — Delusion
MB26.02 — Delusion of guilt

ICD-11 MB26.02 — Delusion of guilt

A delusion involving exaggerated or inappropriate responsibility, need for punishment or retribution, or disproportionate consequences of one’s actions, such as that a minor error in the past will lead to disaster, that the person has committed a sin or horrible crime and should be punished severely, or that the person is responsible for a horrible outcome with which there can be no possible connection.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.