R25.9 – Unspecified abnormal involuntary movements

ICD-10-CM 2027 diagnosis code · Symptoms and signs involving the nervous and musculoskeletal systems

Billable code

ICD-10-CM code R25.9

Code: R25.9 (claims format: R259)
Description: Unspecified abnormal involuntary movements
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: R25-R29 Symptoms and signs involving the nervous and musculoskeletal systems
Parent codes: R25

Notes inherited from parent codes

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

R25 – Abnormal involuntary movements

Excludes1 (not coded here):

specific movement disorders (G20-G26)
stereotyped movement disorders (F98.4)
tic disorders (F95.-)

Index terms for R25.9

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

Related codes in R25

R25.0 – Abnormal head movementsBillable
R25.1 – Tremor, unspecifiedBillable
R25.2 – Cramp and spasmBillable
R25.3 – FasciculationBillable
R25.8 – Other abnormal involuntary movementsBillable

Frequently asked questions

What is ICD-10 code R25.9?

R25.9 is the ICD-10-CM code for unspecified abnormal involuntary movements, in the block R25-R29 (Symptoms and signs involving the nervous and musculoskeletal systems).

Is R25.9 a billable code?

Yes. R25.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does R25.9 belong to?

It belongs to category R25 – Abnormal involuntary movements.

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.