G25.3 Myoclonus

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Myoclonus is G25.3 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
G20-G26: Extrapyramidal and movement disorders (G20-G26)
Category G25
20 codes (16 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G25.3:

  • Jerks, myoclonic
  • Paramyoclonus multiplex
  • Myoclonus, myoclonic, myoclonia (familial) (essential) (multifocal) (simplex)
  • Myoclonus, myoclonic, myoclonia (familial) (essential) (multifocal) (simplex) › drug-induced
  • Convulsions (idiopathic) › myoclonic
  • Myoclonus, myoclonic, myoclonia (familial) (essential) (multifocal) (simplex) › jerks
  • Myoclonus, myoclonic, myoclonia (familial) (essential) (multifocal) (simplex) › familial progressive
  • Myoclonus, myoclonic, myoclonia (familial) (essential) (multifocal) (simplex) › Friedreich's
Excludes1
Not coded here. These conditions should NOT be coded together with G25.3.
  • facial myokymia (G51.4)
  • myoclonic epilepsy (G40.-)
Use Additional Code
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Inclusion Terms

  • Drug-induced myoclonus
  • Palatal myoclonus

U.S. Hospital Utilization

  • An estimated 43,710 U.S. inpatient stays in 2023 included G25.3 among the documented diagnoses.
  • 2,225 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.6.a
Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.6.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

G25 Other extrapyramidal and movement disorders

Related Codes in G25

G25 Other extrapyramidal and movement disorders G25.0 Essential tremor G25.1 Drug-induced tremor G25.2 Other specified forms of tremor G25.4 Drug-induced chorea G25.5 Other chorea G25.6 Drug induced tics and other tics of organic origin G25.61 Drug induced tics G25.69 Other tics of organic origin G25.7 Other and unspecified drug induced movement disorders G25.70 Drug induced movement disorder, unspecified G25.71 Drug induced akathisia G25.79 Other drug induced movement disorders G25.8 Other specified extrapyramidal and movement disorders G25.81 Restless legs syndrome G25.82 Stiff-man syndrome G25.83 Benign shuddering attacks G25.89 Other specified extrapyramidal and movement disorders G25.9 Extrapyramidal and movement disorder, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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