ICD-10-CM 2027
ICD-10 code for confusion
From the official ICD-10-CM alphabetic index entry “Confusion, confused”. Page updated September 29, 2026.
About coding confusion
The ICD-10-CM code for confusion is R41.0 (Disorientation, unspecified). The official index lists 6 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R41.0.
Within R41, choose R41.0 (Disorientation, unspecified) only when documentation doesn't support a more specific option: Anterograde amnesia (R41.1), retrograde amnesia (R41.2), other amnesia (R41.3), neurologic neglect syndrome (R41.4), other symptoms and signs involving cognitive functions and awareness (R41.8) and unspecified symptoms and signs involving cognitive functions and awareness (R41.9).
Don't report R41.0 together with the conditions in its Excludes1 note: delirium due to known physiological condition (F05).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific confusion codes (official index)
- acute R41.0 — Disorientation, unspecified
- with dementia F05 — Delirium due to known physiological condition
- epileptic F05 — Delirium due to known physiological condition
- mental state (psychogenic) F44.89 — Other dissociative and conversion disorders
- psychogenic F44.89 — Other dissociative and conversion disorders
- reactive (from emotional stress, psychological trauma) F44.89 — Other dissociative and conversion disorders
Don't confuse with (Excludes1 for R41.0)
- delirium due to known physiological condition (F05)
Common questions about confusion ICD-10 codes
What is the ICD-10 code for confusion?
- R41.0 — Disorientation, unspecified. More specific codes apply when the documentation supports them: R41.0, F05, F05, F44.89 and others below.
What is the ICD-10 code for acute confusion?
- R41.0 — Disorientation, unspecified.
What is the ICD-10 code for epileptic confusion?
- F05 — Delirium due to known physiological condition.
What is the ICD-10 code for mental state confusion?
- F44.89 — Other dissociative and conversion disorders.
What is the ICD-10 code for psychogenic confusion?
- F44.89 — Other dissociative and conversion disorders.
What is the ICD-10 code for reactive confusion?
- F44.89 — Other dissociative and conversion disorders.
Is R41.0 billable?
- Yes. R41.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R41.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R41.0 as a principal diagnosis.
Is R41.0 a CC or MCC?
- No. R41.0 is neither a CC nor an MCC under MS-DRG v44.0.