R90.81
✓ Billable
Abnormal echoencephalogram
ICD-10-CM · FY2026 · Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Code
R90.81
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code R90.81?
ICD-10-CM code R90.81 represents Abnormal echoencephalogram. It is a billable diagnosis code in the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter, effective October 1, 2025 – September 30, 2026.
Is R90.81 billable?
Yes. R90.81 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is R90.81 in?
R90.81 belongs to the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter (R00–R99) of ICD-10-CM.
Related codes in the R90 category
R90
Abnormal findings on diagnostic imaging of central nervous system
Non-billable
R90.0
Intracranial space-occupying lesion found on diagnostic imaging of central nervous system
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R90.8
Other abnormal findings on diagnostic imaging of central nervous system
Non-billable
R90.82
White matter disease, unspecified
Billable
R90.89
Other abnormal findings on diagnostic imaging of central nervous system
Billable
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