2026 ICD-10-CM Diagnosis Code R47.1Dysarthria and anarthria

ICD-10-CM Codes›R00–R99›R47-R49›R47

ICD-10-CM R47.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R47.1 is a billable ICD-10-CM diagnosis code for dysarthria and anarthria. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nervous system signs and symptoms.

Code Identity

ICD-10-CM Code
R47.1
Billable Status
Yes — Valid for Submission
Code Describes
Dysarthria and anarthria
Short Description
Dysarthria and anarthria
Same as the full description in the CMS dataset.
Parent Code
R47
Speech disturbances, not elsewhere classified

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR47-R49Symptoms and signs involving speech and voice
CategoryR47Speech disturbances, not elsewhere classified
This CodeR47.1Dysarthria and anarthria

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired dysarthria
  • Anarthria
  • Autosomal dominant muscular dystrophy with gene located at 5q31
  • Autosomal dominant muscular dystrophy with limb girdle distribution
  • Autosomal recessive spastic ataxia, optic atrophy, dysarthria syndrome
  • Bradylalia
  • Cerebellar dysarthria
  • Congenital dysarthria
  • Disorder of glutamine metabolism
  • Dysarthria
  • Dysarthria of velopharynx
  • Dysarthriapneumophonia
  • Extrapyramidal dysarthria
  • Flaccid dysarthria
  • Hyperkinetic dysarthria
  • Late onset proximal muscular dystrophy with dysarthria
  • Lingual dysarthria
  • Mixed dysarthria
  • Partington syndrome
  • Postnatal microcephaly, infantile hypotonia, spastic diplegia, dysarthria, intellectual disability syndrome
  • Second cranial nerve finding
  • Sensory ataxia
  • Sensory ataxic neuropathy with dysarthria and ophthalmoparesis syndrome
  • Spastic ataxia, dysarthria due to glutaminase deficiency

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • dysarthria following cerebrovascular disease (I69. with final characters -22)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Anarthria
    • Dysarthria

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM010
Nervous system signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Dysarthria

    disorders of speech articulation caused by imperfect coordination of pharynx, larynx, tongue, or face muscles. this may result from cranial nerve diseases; neuromuscular diseases; cerebellar diseases; basal ganglia diseases; brain stem diseases; or diseases of the corticobulbar tracts (see pyramidal tracts). the cortical language centers are intact in this condition. (from adams et al., principles of neurology, 6th ed, p489)

  • Pseudobulbar Palsy

    a syndrome characterized by dysarthria, dysphagia, dysphonia, impairment of voluntary movements of tongue and facial muscles, and emotional lability. this condition is caused by diseases that affect the motor fibers that travel from the cerebral cortex to the lower brain stem (i.e., corticobulbar tracts); including multiple sclerosis; motor neuron disease; and cerebrovascular disorders. (from adams et al., principles of neurology, 6th ed, p489)

  • Dysarthria

    slow and slurred speech resulting from inability to coordinate the muscles that are used in speech. causes include brain damage, parkinson disease, and developmental causes.

  • Dysarthria following Cerebral Infarction|Dysarthria following cerebral infarction

    evidence of dysarthria following cerebral infarction.

  • Dysarthria following Other Cerebrovascular Disease|Dysarthria following other cerebrovascular disease

    evidence of dysarthria following other cerebrovascular disease.

  • Dysarthria following Unspecified Cerebrovascular Disease|Dysarthria following unspecified cerebrovascular disease

    evidence of dysarthria following unspecified cerebrovascular disease.

  • Dysarthria, CTCAE|Dysarthria|Dysarthria

    a disorder characterized by slow and slurred speech resulting from an inability to coordinate the muscles used in speech.

  • Grade 1 Dysarthria, CTCAE|Grade 1 Dysarthria

    mild slurred speech

  • Grade 2 Dysarthria, CTCAE|Grade 2 Dysarthria

    moderate impairment of articulation or slurred speech

  • Grade 3 Dysarthria, CTCAE|Grade 3 Dysarthria

    severe impairment of articulation or slurred speech

  • Kurtzke Functional System Scores KFSS103 Original Result - Marked dysarthria or other marked disability|KFSS103-Marked dysarthria or other marked disability|Marked dysarthria or other marked disability

    kurtzke functional system scores kfss103 original result - marked dysarthria or other marked disability.

  • UHDRS 1999 Version - Dysarthria|UHDR1-Dysarthria|UHDR1-Dysarthria|UHDR104

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) dysarthria.

Patient EducationClinical

Speech and Communication Disorders

Many disorders can affect our ability to speak and communicate. They range from saying sounds incorrectly to being completely unable to speak or understand speech. Causes include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert R47.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
784.51 Dysarthria
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R47.1Overview

Is R47.1 (Speech disturbances, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report dysarthria and anarthria on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can R47.1 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the dysarthria and anarthria is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R47.1?

Under the General Equivalence Mappings, dysarthria and anarthria converts to ICD-9-CM 784.51 (dysarthria). The mapping is a direct match.

Footnotes

[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.