R27.0

Ataxia, unspecified

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · R27.0

Excludes 1

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

Inherited from R27Other lack of coordination

Excludes 1

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

Inherited from chapter 18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Excludes 2

abnormal findings on antenatal screening of mother (O28.-) certain conditions originating in the perinatal period (P04-P96) signs and symptoms classified in the body system chapters signs and symptoms of breast (N63, N64.5)

Official Guidelines for R27.0

FY 2026 ›

I.C.18Chapter-specific guidanceChapter 18: Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

Subsections

Sections that reference R27.0

Sections whose FY 2026 text names R27.0, its R27 category, or a range containing it — the chapter guidance above is the authoritative source.

Find R27.0 in the alphabetic index

2 index paths lead to this code