Hallucinations

Definition

Sensory perceptions of any modality occurring in the absence of the appropriate (external) stimulus. The person may or may not have insight into the unreal nature of the perception.

10 subordinate codes

• MB27.20Auditory hallucinations
• MB27.21Gustatory hallucinations
• MB27.22Hypnopompic hallucinations
• MB27.23Hypnagogic hallucinations
• MB27.24Olfactory hallucinations
• MB27.25Somatic hallucinations
• MB27.26Tactile hallucinations
• MB27.27Visual hallucinations
• 4B4YOther specified diseases of the immune system
• 4B4ZDiseases of the immune system, unspecified

Nearby in Symptoms or signs involving perceptual disturbance

• MB27.0Depersonalisation
• MB27.1Derealisation
• MB27.3Disturbance of body image
• MB27.4Illusions
• 4B4YOther specified diseases of the immune system
• 4B4ZDiseases of the immune system, unspecified