Emergency: 119
AMDA-IMIC

R90 Abnormal findings on diagnostic imaging of central nervous system

Category / Non-billable header 5 subcodes

Block: Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)

Subcodes

Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.

Code Description Billable
R90..0 Intracranial space-occupying lesion found on diagnostic imaging of central nervous system Yes
R90..8 Other abnormal findings on diagnostic imaging of central nervous system No
R90..81 Abnormal echoencephalogram Yes
R90..82 White matter disease, unspecified Yes
R90..89 Other abnormal findings on diagnostic imaging of central nervous system Yes

Last reviewed: September 2026