2027 ICD-10-CM Diagnosis Code R25.1Tremor, unspecified
ICD-10-CM Codes›R00–R99›R25-R29›R25
- Billable — Valid for Submission
- Not Chronic
R25.1 is a billable ICD-10-CM diagnosis code for tremor, unspecified. 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. 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
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Aspergillus clavatus tremors
- Bilateral outstretched hands tremor
- Chronic tremor
- Coarse tremor
- Continuous tremor
- Enhanced physiological tremor
- Fine tremor
- Hand tremor
- Intermittent tremor
- Lip tremor
- Massive tremor
- Passive tremor
- Persistent tremor
- Physiological tremor
- Trembles
- Tremor
- Tremor due to central nervous system disease
- Tremor due to orthostatic hypotension
- Tremor due to pheochromocytoma
- Tremor due to substance withdrawal
- Tremor of limb
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R25.1: its own notes plus those printed at R25 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.
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.
Notes
General instructions on how these codes are used.
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name R25.1, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Abnormal, abnormality, abnormalities See Also: Anomaly;
movement (disorder) See Also: Disorder, movement;
tremor R25.1
Hemitremor R25.1
Tremor (s) R25.1
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Tremor
cyclical movement of a body part that can represent either a physiologic process or a manifestation of disease. intention or action tremor, a common manifestation of cerebellar diseases, is aggravated by movement. in contrast, resting tremor is maximal when there is no attempt at voluntary movement, and occurs as a relatively frequent manifestation of parkinson disease.
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 R25.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R25.1Overview
What is the ICD-10 code for tremor, unspecified?
The ICD-10-CM code for tremor, unspecified is R25.1 (sometimes written as R251). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R25.1 (Abnormal involuntary movements) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report tremor, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R25.1 group to?
When tremor, unspecified 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 R25.1 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the tremor, unspecified is established, that condition takes the principal position instead.
Can R25.1 be reported with G25.5?
Not as a rule. The Excludes1 note on R25.1 lists "chorea NOS (G25.5)". 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).
