2026 ICD-10-CM Diagnosis Code R27Other lack of coordination

ICD-10-CM Codes›R00–R99›R25-R29›R27

ICD-10-CM R27
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R27 is a non-billable ICD-10-CM category code for other lack of coordination, so it cannot be submitted on claims. Use a more specific code from this category instead, such as R27.0, R27.8, and R27.9. 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
R27
Billable Status
No — Non-Billable Category
Code Describes
Other lack of coordination
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
CategoryR27Other lack of coordination
This CodeR27Other lack of coordination

Specific Coding for Other lack of coordinationOverview

Non-specific codes like R27 require more characters. Use one of these billable codes instead:

  • Use R27.0 for Ataxia, unspecified

  • Use R27.8 for Other lack of coordination

  • Use R27.9 for Unspecified lack of coordination

Tabular List NotesGuidance

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

Type 1 Excludes

  • ataxic gait R26.0
  • hereditary ataxia G11
  • vertigo NOS R42

Patient EducationClinical

Movement Disorders

Movement disorders are neurologic conditions that cause problems with movement, such as:

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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 R27Overview

Is R27 (Other lack of coordination) a billable code?

No. This is a category header that groups the codes for other lack of coordination, and headers cannot be submitted on claims. Claims for other lack of coordination need a more specific code from this category, such as R27.0, R27.8, and R27.9.

Can R27 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the other lack of coordination is established, that condition takes the principal position instead.