R41.9
Billable codeUnspecified symptoms and signs involving cognitive functions and awareness
The ICD-10 code for unspecified symptoms and signs involving cognitive functions and awareness is R41.9.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Unspecified neurocognitive disorder
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- R41.0Disorientation, unspecified
- R41.1Anterograde amnesia
- R41.2Retrograde amnesia
- R41.3Other amnesia
- R41.4Neurologic neglect syndrome
- R41.8Other symptoms and signs involving cognitive functions and awarenessnon-billable header
- R41.9Unspecified symptoms and signs involving cognitive functions and awareness
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 78099Approximate match
Associated MS-DRGs
R41.9 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.