ICD-10-CM 2027
ICD-10 code for tremor
From the official ICD-10-CM alphabetic index entry “Tremor (s)”. Page updated September 29, 2026.
About coding tremor
The ICD-10-CM code for tremor is R25.1 (Tremor, unspecified). The official index lists 10 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R25.1.
Within R25, choose R25.1 (Tremor, unspecified) only when documentation doesn't support a more specific option: abnormal head movements (R25.0), cramp and spasm (R25.2), Fasciculation (R25.3), other abnormal involuntary movements (R25.8) and unspecified abnormal involuntary movements (R25.9).
Don't report R25.1 together with the conditions in its Excludes1 note: chorea NOS (G25.5), essential tremor (G25.0), hysterical tremor (F44.4) and intention tremor (G25.2).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific tremor codes (official index)
- drug induced G25.1 — Drug-induced tremor
- essential (benign) G25.0 — Essential tremor
- familial G25.0 — Essential tremor
- hereditary G25.0 — Essential tremor
- hysterical F44.4 — Conversion disorder with motor symptom or deficit
- intention G25.2 — Other specified forms of tremor
- medication induced postural G25.1 — Drug-induced tremor
- mercurial
- Parkinson's
- psychogenic (conversion reaction) F44.4 — Conversion disorder with motor symptom or deficit
- senilis R54 — Age-related physical debility
- specified type NEC G25.2 — Other specified forms of tremor
Don't confuse with (Excludes1 for R25.1)
Common questions about tremor ICD-10 codes
What is the ICD-10 code for tremor?
- R25.1 — Tremor, unspecified. More specific codes apply when the documentation supports them: G25.1, G25.0, G25.0, G25.0 and others below.
What is the ICD-10 code for drug induced tremor?
- G25.1 — Drug-induced tremor.
What is the ICD-10 code for essential tremor?
- G25.0 — Essential tremor.
What is the ICD-10 code for familial tremor?
- G25.0 — Essential tremor.
What is the ICD-10 code for hereditary tremor?
- G25.0 — Essential tremor.
What is the ICD-10 code for hysterical tremor?
- F44.4 — Conversion disorder with motor symptom or deficit.
What is the ICD-10 code for intention tremor?
- G25.2 — Other specified forms of tremor.
Is R25.1 billable?
- Yes. R25.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R25.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R25.1 as a principal diagnosis.
Is R25.1 a CC or MCC?
- No. R25.1 is neither a CC nor an MCC under MS-DRG v44.0.