R41.82

Billable

Altered mental status, unspecified

R41.82 is the ICD-10-CM code for Altered mental status, unspecified. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
R00-R99
Parent
R41.8
Edition
FY2026

R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

What this means — in plain language

MedlinePlus · NIH

What are mental disorders? Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day.. What are some types of mental disorders? There are many different types of mental disorders. Some common ones…

Read more about Mental Disorders at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • Change in mental status NOS

Excludes1 — not coded here

  • altered level of consciousness (R40.-)
  • altered mental status due to known condition - code to condition
  • delirium NOS (R41.0)

Frequently asked questions

What is ICD-10 code R41.82?
R41.82 is the ICD-10-CM code for "Altered mental status, unspecified". It falls under R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
Is R41.82 a billable code?
Yes — R41.82 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from R41.82?
Excludes1 (not coded here): altered level of consciousness (R40.-); altered mental status due to known condition - code to condition; delirium NOS (R41.0).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.