R41.81 — Age-related cognitive decline
R41.81 is a billable, specific ICD-10-CM code for age-related cognitive decline. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Senility NOS
Other codes that can never be billed with R41.81
These codes carry an Excludes1 note pointing at R41.81. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R41.81 alone.
Risk adjustment
R41.81 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
R41.81 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57130Billing and Coding: Psychiatric Codes
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
- A59036Billing and Coding: Cognitive Assessment and Care Plan Service
- A59186Billing and Coding: Magnesium
How R41.81 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to R41.81.
- Senile, senility
- Decline›cognitive, age-associated
- Frailty›mental
- Symptoms NEC›involving›awareness›senile cognitive decline
- Symptoms NEC›involving›cognitive functions›senile cognitive decline
Related codes at this level
Codes that share R41.8. If R41.81 is not quite right, the correct code is usually one of these.
Questions about R41.81
- Is R41.81 a billable ICD-10-CM code?
- Yes. R41.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does R41.81 sit in the tabular list?
- Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46).