R90.81 Abnormal echoencephalogram

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 794.01 Nonspecific abnormal echoencephalogram

Code annotations containing back-references to R90.81

Back-references to R90

• Type 1 Excludes: R22 Localized swelling, mass and lump of skin and subcutaneous tissue ("abnormal findings on diagnostic imaging (R90-R93)")

Diagnosis Index entries for R90.81

• Abnormal, abnormality, abnormalities › echoencephalogram

Nearby codes

• R90 Abnormal findings on diagnostic imaging of central nervous system
• R90.0 Intracranial space-occupying lesion found on diagnostic imaging of central nervous system
• R90.8 Other abnormal findings on diagnostic imaging of central nervous system
• R90.81 Abnormal echoencephalogram (this code)
• R90.82 White matter disease, unspecified
• R90.89 Other abnormal findings on diagnostic imaging of central nervous system