2026 ICD-10-CM Diagnosis Code G26Extrapyramidal and movement disorders in diseases classified elsewhere
ICD-10-CM Codes›G00–G99›G20-G26›G26
- Billable — Valid for Submission
- Chronic Condition
G26 is a billable ICD-10-CM diagnosis code for extrapyramidal and movement disorders in diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 56 through 57. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (often hereditary or degenerative).
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for G26.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Code First
- underlying disease
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Movement Disorders
Movement disorders are neurologic conditions that cause problems with movement, such as:
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Convert G26 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About G26Overview
What is the ICD-10 code for extrapyramidal and movement disorders in diseases classified elsewhere?
The ICD-10-CM code for extrapyramidal and movement disorders in diseases classified elsewhere is G26. It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is G26 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report extrapyramidal and movement disorders in diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does G26 group to?
On inpatient claims, extrapyramidal and movement disorders in diseases classified elsewhere maps to MS-DRG 56, 57, with relative weights from 1.2956 to 2.3231 depending on complications. Higher weights mean higher Medicare reimbursement.
Can G26 be a principal diagnosis?
No. This is a manifestation code: extrapyramidal and movement disorders in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
What is the ICD-9 equivalent of G26?
Under the General Equivalence Mappings, extrapyramidal and movement disorders in diseases classified elsewhere converts to ICD-9-CM 333.99 (extrapyramidal dis NEC). The mapping is approximate, so confirm the match fits the documentation.
