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F05 - Delirium due to known physiological condition

ICD-10-CM Chapter 5: Mental, Behavioral and Neurodevelopmental disorders · F01-F09 Mental disorders due to known physiological conditions (F01-F09) · Top-level category · FY2027

Applicable To

Inclusion terms listed under F05 in the ICD-10-CM tabular list.

  • Acute or subacute brain syndrome
  • Acute or subacute confusional state (nonalcoholic)
  • Acute or subacute infective psychosis
  • Acute or subacute organic reaction
  • Acute or subacute psycho-organic syndrome
  • Delirium of mixed etiology
  • Delirium superimposed on dementia
  • Sundowning

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom F05

Mutually exclusive: these conditions are never reported together with this code.

  • delirium NOS (R41.0)
Excludes 2 — Not Included HereFrom F05

Not part of this code; report both codes when the patient has both conditions.

  • delirium tremens alcohol-induced or unspecified (F10.231, F10.921)
Code FirstFrom F05

Sequence the underlying condition before this code.

  • the underlying physiological condition, such as:
  • dementia (F03.9-)
NotesFrom F01-F09 Mental disorders due to known physiological conditions (F01-F09)

Instructional notes from the ICD-10-CM tabular list.

  • This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.
IncludesFrom Chapter F01-F99

Conditions this code covers.

  • disorders of psychological development
Excludes 2 — Not Included HereFrom Chapter F01-F99

Not part of this code; report both codes when the patient has both conditions.

  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Inpatient DRG Payments

DRG 8804,906 discharges

Acute Adjustment Reaction And Psychosocial Dysfunction

Avg. Medicare Payment

$7,564

Total Payment$9,825
Patient Responsibility$2,261
Hospital Charge$46,037

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with F05.