R27.9 Unspecified lack of coordination

Billable ICD-10-CM code, FY2026.

Applies from R27 Other lack of coordination

Excludes1 (never code together)

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

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 781.3 Lack of coordination (approximate)

Code annotations containing back-references to R27.9

Back-references to R27

• Type 1 Excludes: F82 Specific developmental disorder of motor function ("lack of coordination (R27.-)")

Diagnosis Index entries for R27.9

• Lack of › coordination

Nearby codes

• R27 Other lack of coordination
• R27.0 Ataxia, unspecified
• R27.8 Other lack of coordination
• R27.9 Unspecified lack of coordination (this code)