R90.82 – White matter disease, unspecified

ICD-10-CM 2027 diagnosis code · Abnormal findings on diagnostic imaging and in function studies, without diagnosis

Billable code

ICD-10-CM code R90.82

Code: R90.82 (claims format: R9082)
Description: White matter disease, unspecified
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: R90-R94 Abnormal findings on diagnostic imaging and in function studies, without diagnosis
Parent codes: R90 › R90.8

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block R90-R94

Includes:

nonspecific abnormal findings on diagnostic imaging by computerized axial tomography [CAT scan]
nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging [MRI][NMR]
nonspecific abnormal findings on diagnostic imaging by positron emission tomography [PET scan]
nonspecific abnormal findings on diagnostic imaging by thermography
nonspecific abnormal findings on diagnostic imaging by ultrasound [echogram]
nonspecific abnormal findings on diagnostic imaging by X-ray examination

Excludes1 (not coded here):

abnormal findings on antenatal screening of mother (O28.-)
diagnostic abnormal findings classified elsewhere - see Alphabetical Index

Index terms for R90.82

Entries in the ICD-10-CM alphabetic index that lead to this code:

Disease, diseased, white matter

Related codes in R90.8

Frequently asked questions

What is ICD-10 code R90.82?

R90.82 is the ICD-10-CM code for white matter disease, unspecified, in the block R90-R94 (Abnormal findings on diagnostic imaging and in function studies, without diagnosis).

Is R90.82 a billable code?

Yes. R90.82 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does R90.82 belong to?

It belongs to category R90 – Abnormal findings on diagnostic imaging of central nervous system.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.