2026 ICD-10-CM Diagnosis Code R26Abnormalities of gait and mobility

ICD-10-CM Codes›R00–R99›R25-R29›R26

ICD-10-CM R26
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R26 is a non-billable ICD-10-CM category code for abnormalities of gait and mobility, so it cannot be submitted on claims. Use a more specific code from this category instead, such as R26.0, R26.1, R26.2, and R26.81. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established.

Code Identity

ICD-10-CM Code
R26
Billable Status
No — Non-Billable Category
Code Describes
Abnormalities of gait and mobility
Chapter
R25-R29
Symptoms and signs involving the nervous and musculoskeletal systems

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR25-R29Symptoms and signs involving the nervous and musculoskeletal systems
CategoryR26Abnormalities of gait and mobility
This CodeR26Abnormalities of gait and mobility

Specific Coding for Abnormalities of gait and mobilityOverview

Non-specific codes like R26 require more characters. Use one of these billable codes instead:

  • Use R26.0 for Ataxic gait

  • Use R26.1 for Paralytic gait

  • Use R26.2 for Difficulty in walking, not elsewhere classified

  • R26.8 for Other abnormalities of gait and mobility

  • Use R26.81 for Unsteadiness on feet

  • Use R26.89 for Other abnormalities of gait and mobility

  • Use R26.9 for Unspecified abnormalities of gait and mobility

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • ataxia NOS R27.0
  • hereditary ataxia G11
  • locomotor syphilitic ataxia A52.11
  • immobility syndrome paraplegic M62.3

Patient EducationClinical

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Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R26Overview

Is R26 (Abnormalities of gait and mobility) a billable code?

No. This is a category header that groups the codes for abnormalities of gait and mobility, and headers cannot be submitted on claims. Claims for abnormalities of gait and mobility need a more specific code from this category, such as R26.0, R26.1, and R26.2.

Can R26 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the abnormalities of gait and mobility is established, that condition takes the principal position instead.