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

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.

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