R27.0 Ataxia, unspecified

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• ataxia following cerebrovascular disease (I69. with final characters -93)

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 R27.0

Back-references to R27.0

• Type 1 Excludes: R26 Abnormalities of gait and mobility ("ataxia NOS (R27.0)")

Back-references to R27

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

Diagnosis Index entries for R27.0

• Ataxia, ataxy, ataxic
• Lack of › coordination › ataxia

Nearby codes

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