2027 ICD-10-CM Diagnosis Code G25.0Essential tremor

ICD-10-CM Codes›G00–G99›G20-G26›G25

ICD-10-CM G25.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G25.0 is a billable ICD-10-CM diagnosis code for essential tremor. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 91 through 93. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (often hereditary or degenerative).

Code Identity

ICD-10-CM Code
G25.0
Billable Status
Yes — Valid for Submission
Code Describes
Essential tremor
Short Description
Essential tremor
Same as the full description in the CMS dataset.
Parent Code
G25
Other extrapyramidal and movement disorders

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG20-G26Extrapyramidal and movement disorders
CategoryG25Other extrapyramidal and movement disorders
This CodeG25.0Essential tremor

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Essential tremor
  • Fragile X associated tremor ataxia syndrome
  • Hereditary essential tremor
  • Isolated facial tremor
  • Isolated head tremor
  • Isolated vocal tremor
  • Premature canities
  • Progressive essential tremor, speech impairment, facial dysmorphism, intellectual disability, abnormal behavior syndrome
  • Sensorineural hearing loss, early graying, essential tremor syndrome
  • Tremor, nystagmus, duodenal ulcer syndrome

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G25.0: its own notes plus those printed at G25 and Chapter 6. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Familial tremor

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From G25 Other extrapyramidal and movement disorders applies to 16 codes
  • sleep related movement disorders (G47.6-)
From Chapter 6 (G00-G99) Diseases of the nervous system applies to 700 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name G25.0, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming G25.0: they are not reported together with it, unless the two conditions are unrelated.

  • R25.1 Tremor, unspecified
    essential tremor (G25.0)
  • R25 Abnormal involuntary movements
    specific movement disorders (G20-G26) names G20-G26, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming G25.0: its condition is not part of those codes, and both may be reported when the patient has both.

  • F98.4 Stereotyped movement disorders
    movement disorders of organic origin (G20-G25) names G20-G25, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR NVS006
Other nervous system disorders (often hereditary or degenerative)
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Essential Tremor

    a relatively common disorder characterized by a fairly specific pattern of tremors which are most prominent in the upper extremities and neck, inducing titubations of the head. the tremor is usually mild, but when severe may be disabling. an autosomal dominant pattern of inheritance may occur in some families (i.e., familial tremor). (mov disord 1988;13(1):5-10)

Patient EducationClinical

Tremor

A tremor is a neurological condition that includes shaking or trembling movements in one or more parts of your body. It most often affects the hands. But it can also affect the arms, legs, head, vocal cords, and torso (trunk). A tremor is involuntary, meaning that you cannot control it. It happens because of muscle contractions.

The full article covers:

  • What is a tremor?
  • What are the types of tremor?
  • What causes tremor?
  • Who is at risk for tremor?
  • What are the symptoms of tremor?
  • How is tremor diagnosed?
  • What are the treatments for tremor?

Read the full article at MedlinePlus

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

Convert G25.0 to ICD-9-CMHistory

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

ICD-9-CM
333.1 Tremor NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G25.0Overview

What is the ICD-10 code for essential tremor?

The ICD-10-CM code for essential tremor is G25.0 (sometimes written as G250). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is G25.0 (Other extrapyramidal and movement disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report essential tremor on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does G25.0 group to?

When essential tremor is the principal diagnosis on an inpatient stay, it groups to MS-DRG 91, 92, 93, with relative weights from 0.7783 to 1.7050 depending on complications. Higher weights mean higher Medicare reimbursement.

Can G25.0 be reported with R25.1?

Not as a rule. The Excludes1 note on G25.0 lists "tremor NOS (R25.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of G25.0?

Under the General Equivalence Mappings, essential tremor converts to ICD-9-CM 333.1 (tremor NEC). The mapping is approximate, so confirm the match fits the documentation.