Version 2024
No Valid Principal Dx

2024 ICD-10-CM Diagnosis Code R25.8

Other abnormal involuntary movements

ICD-10-CM Code:
ICD-10 Code for:
Other abnormal involuntary movements
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
    • Symptoms and signs involving the nervous and musculoskeletal systems
      • Abnormal involuntary movements

R25.8 is a billable diagnosis code used to specify a medical diagnosis of other abnormal involuntary movements. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Ankle clonus
  • Ankle clonus present
  • Ankle clonus sustained
  • Ankle clonus unsustained
  • Anodal closure clonus
  • Athetoid movement
  • Athetoid paralysis
  • Athetosis
  • Athetosis with rigidity
  • Athetosis with spastic paraplegia
  • Blink reflex finding
  • Blinking
  • Bradykinesia
  • Clonus
  • Excessive blinking - involuntary
  • Flinging movement
  • Flinging movement of arm
  • Flinging movement of leg
  • Involuntary truncal rocking
  • Movement of eyelid - finding
  • Named sensory sign
  • Opisthotonus
  • Patella clonus unsustained
  • Patellar clonus
  • Patellar clonus present
  • Patellar clonus sustained
  • Posthemiplegic athetosis
  • Pseudoathetosis
  • Rumination - mouth
  • Sustained clonus
  • Synkinesis
  • Synkinesis of eyelid
  • Synkinesis of face
  • Wrist clonus
  • Writhing movements

Clinical Classification

Clinical Information

  • Blinking

    brief closing of the eyelids by involuntary normal periodic closing, as a protective measure, or by voluntary action.
  • Athetosis

    a dyskinesia characterized by an inability to maintain the fingers, toes, tongue, or other body parts in a stable position, resulting in continuous slow, sinusoidal, and flowing involuntary movements. this condition is frequently accompanied by chorea, where it is referred to as choreoathetosis. athetosis may occur as a manifestation of basal ganglia diseases or drug toxicity. (from adams et al., principles of neurology, 6th ed, p76)
  • Synkinesis

    an involuntary movement accompanying a volitional movement. it often refers to facial movements that accompany facial paralysis.
  • Facial Paralysis

    severe or complete loss of facial muscle motor function. this condition may result from central or peripheral lesions. damage to cns motor pathways from the cerebral cortex to the facial nuclei in the pons leads to facial weakness that generally spares the forehead muscles. facial nerve diseases generally results in generalized hemifacial weakness. neuromuscular junction diseases and muscular diseases may also cause facial paralysis or paresis.
  • Bradykinesia

    slow movement.
  • Bradykinesia Evaluation|BRADYKIN|Bradykinesia|Bradykinesia

    an evaluation of bradykinesia.
  • ESRS-A - Bradykinesia/Hypokinesia|ESRSA1-Bradykinesia/Hypokinesia|ESRSA1-Bradykinesia/Hypokinesia|ESRSA110

    extrapyramidal symptom rating scale-abbreviated (esrs-a) parkinsonism: bradykinesia or hypokinesia.
  • MDS-UPDRS - Body Bradykinesia|UPD2-Body Bradykinesia|UPD2-Body Bradykinesia|UPD2314

    the movement disorder society version of the unified parkinson's disease rating scale (mds-updrs) global spontaneity of movement (body bradykinesia).
  • UHDRS 1999 Version - Bradykinesia: Body|UHDR1-Bradykinesia: Body|UHDR1-Bradykinesia: Body|UHDR110

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) bradykinesia-body.
  • UPDRS - Motor Examination: Body Bradykinesia and Hypokinesia|UPD1-Motor:Bradykinesia and Hypokinesia|UPD1-Motor:Bradykinesia and Hypokinesia|UPD131

    unified parkinson's disease rating scale (updrs) motor examination; body bradykinesia and hypokinesia (combining slowness, hesitancy, decreased arm swing, small amplitude, and poverty of movement in general.).
  • Athetosis

    slow, involuntary, and nonpurposeful writhing movements that usually affect the upper limbs.
  • Choreoathetosis|Choreathetosis

    abnormal movement characterized by involuntary jerking and writhing affecting the limbs, trunk, and facial muscles.
  • Infantile Convulsions and Paroxysmal Choreoathetosis, Familial|ICCA|ICCA Syndrome|PKD/IC|Paroxysmal Kinesigenic Dyskinesia with Infantile Convulsions

    an autosomal dominant inherited disorder caused by mutation(s) in the prrt2 gene, encoding proline-rich transmembrane protein 2. it is characterized by epileptic seizures and paroxysmal kinesigenic choreoathetosis. it shares features with episodic kinesigenic dyskinesia-1, which is an allelic disorder.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert R25.8 to ICD-9-CM

  • ICD-9-CM Code: 781.0 - Abn involun movement NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education

Movement Disorders

Movement disorders are neurologic conditions that cause problems with movement, such as:

  • Increased movement that can be voluntary (intentional) or involuntary (unintended)
  • Decreased or slow voluntary movement

There are many different movement disorders. Some of the more common types include:

  • Ataxia, the loss of muscle coordination
  • Dystonia, in which involuntary contractions of your muscles cause twisting and repetitive movements. The movements can be painful.
  • Huntington's disease, an inherited disease that causes nerve cells in certain parts of the brain to waste away. This includes the nerve cells that help to control voluntary movement.
  • Parkinson's disease, which is disorder that slowly gets worse over time. It causes tremors, slowness of movement, and trouble walking.
  • Tourette syndrome, a condition which causes people to make sudden twitches, movements, or sounds (tics)
  • Tremor and essential tremor, which cause involuntary trembling or shaking movements. The movements may be in one or more parts of your body.

Causes of movement disorders include:

  • Genetics
  • Infections
  • Medicines
  • Damage to the brain, spinal cord, or peripheral nerves
  • Metabolic disorders
  • Stroke and vascular diseases
  • Toxins

Treatment varies by disorder. Medicines can cure some disorders. Others get better when an underlying disease is treated. Often, however, there is no cure. In that case, the goal of treatment is to improve symptoms and relieve pain.

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.