ICD-10-CM Alphabetic Index · FY 2026 77 Entries

Delirium in the ICD-10-CM Index ICD-10-CM

The main term Delirium, delirious (acute or subacute) (not alcohol- or drug-induced) carries 77 index entries pointing to 33 ICD-10-CM codes. The default entry is R41.0, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.

✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
77
Index Entries
33
Codes Referenced
R41.0
Default Code
D
Letter
77 of 77 shown
ICD-10-CM

Index Entries Under Delirium 77 entries · 33 codes

Delirium, delirious (acute or subacute) (not alcohol- or drug-induced) R41.0
with
dementia F05 see also Dementia
alcoholic (acute) (tremens) (withdrawal) F10.921
with intoxication F10.921
in
abuse F10.121
dependence F10.221
due to (secondary to)
alcohol
intoxication F10.921
in
abuse F10.121
dependence F10.221
withdrawal F10.231
amphetamine intoxication F15.921
in
abuse F15.121
dependence F15.221
anxiolytic
intoxication F13.921
in
abuse F13.121
dependence F13.221
withdrawal F13.231
cannabis intoxication (acute) F12.921
in
abuse F12.121
dependence F12.221
cocaine intoxication (acute) F14.921
in
abuse F14.121
dependence F14.221
general medical condition F05
hallucinogen intoxication F16.921
in
abuse F16.121
dependence F16.221
hypnotic
intoxication F13.921
in
abuse F13.121
dependence F13.221
withdrawal F13.231
inhalant intoxication (acute) F18.921
in
abuse F18.121
dependence F18.221
multiple etiologies F05
opioid intoxication (acute) F11.921
in
abuse F11.121
dependence F11.221
other (or unknown) substance F19.921
phencyclidine intoxication (acute) F16.921
in
abuse F16.121
dependence F16.221
psychoactive substance NEC intoxication (acute) F19.921
in
abuse F19.121
dependence F19.221
sedative
intoxication F13.921
in
abuse F13.121
dependence F13.221
withdrawal F13.231
unknown etiology R41.0
exhaustion F43.0
hysterical F44.89
postprocedural (postoperative) F05
puerperal F05
thyroid see Thyrotoxicosis with thyroid storm
traumatic see Injury, intracranial
tremens (alcohol-induced) F10.231
sedative-induced F13.231

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Related Index Terms

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Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.