Abnormal findings on diagnostic imaging of central nervous system (R90) ICD-10-CM
The R90 code range covers abnormal findings on diagnostic imaging of central nervous system with 6 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the R90 Range 6 codes · 4 billable
- R90 Abnormal findings on diagnostic imaging of central nervous systemNon-billable
- 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 systemNon-billable
- R90.81 Abnormal echoencephalogram
- R90.82 White matter disease, unspecified
- R90.89 Other abnormal findings on diagnostic imaging of central nervous system
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the R90 range.
Leukoencephalopathies
Any of various diseases affecting the white matter of the central nervous system.
About the R90 Code Range
Imaging can show an abnormal finding in the central nervous system without establishing a diagnosis.
R90.0 identifies an intracranial space-occupying lesion found on imaging. R90.8 groups other abnormal imaging findings. Its subdivisions distinguish an abnormal echoencephalogram, a head imaging result, at R90.81; unspecified white matter disease at R90.82; and other findings at R90.89.
Questions About This Page
How many billable codes are in the R90 range?
Of the 6 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the R90 range classify?
The range classifies abnormal findings on diagnostic imaging of central nervous system. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
