ICD-10-CM > R00-R99 > R25-R29 > R27 R27 Other lack of coordination Non-Billable/Non-Specific Type 1 Excludes ataxic gait (R26.0)hereditary ataxia (G11.-)vertigo NOS (R42) Codes R27.0Ataxia, unspecifiedR27.8Other lack of coordinationR27.9Unspecified lack of coordination