ICD-10 F05: Delirium due to known physiological condition
Using ICD-10 F05 on a Superbill
ICD-10 code F05 (Delirium due to known physiological condition) is a organic mental disorders code used on superbills for mental health therapy billing. Insurance companies require at least one ICD-10 code per superbill to process a reimbursement claim.
CPT Codes Commonly Used With F05
Common CPT codes paired with ICD-10 F05 include 90837 (60-min psychotherapy), 90834 (45-min psychotherapy), and 90791 (initial psychiatric evaluation). The CPT code reflects the service rendered, not the diagnosis.
Clinical Criteria
Disturbance in attention and awareness that develops acutely, tends to fluctuate, and is caused by a medical condition. Accompanied by additional cognitive disturbance (disorientation, memory impairment, language/perception disturbances). Not better explained by pre-existing NCD. Supportive psychotherapy may address distress during or after delirium episodes.
DSM-5 Cross-Reference
DSM-5 293.0 — Delirium Due to Another Medical Condition