R40.4
Transient alteration of awareness
Approximate Synonyms
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Mental status, transient alteration
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Transient altered mental status
Details
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R40.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
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The 2023 edition of ICD-10-CM R40.4 became effective on October 1, 2022.
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This is the American ICD-10-CM version of R40.4 – other international versions of ICD-10 R40.4 may differ.