R41.9 ICD-10-CM Code: Unspecified symptoms and signs involving cognitive functions and awareness
R41.9 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software
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FY 2026 Apr update / Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) / Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
R41.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified symptoms and signs involving cognitive functions and awareness
Cognitive or awareness symptoms that cannot be more specifically identified or classified.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Unspecified neurocognitive disorder
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for R41.9 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for R41.9 in this effective period.
Excludes 1
Official- dissociative [conversion] disorders (F44.-)
- mild cognitive impairment of uncertain or unknown etiology (G31.84)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for R41.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for R41.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for R41.9 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is R41.9 an HCC code?
No. R41.9 is a billable ICD-10-CM code with no mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models.
- Code
- R41.9
- Description
- Unspecified symptoms and signs involving cognitive functions and awareness
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
R41.9 is the ICD-10-CM diagnosis code for unspecified symptoms and signs involving cognitive functions and awareness. Cognitive or awareness symptoms that cannot be more specifically identified or classified. R41.9 sits in the ICD-10-CM chapter for symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (r00-r99), within the section covering symptoms and signs involving cognition, perception, emotional state and behavior (r40-r46).
R41.9 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.
This is a catch-all code; attempt to use more specific R41 codes when the symptom can be identified.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for R41.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is a catch-all code; attempt to use more specific R41 codes when the symptom can be identified
- •Document all observed cognitive or awareness abnormalities to support more specific coding in future encounters