R27.0
BillableAtaxia, unspecified
Ataxia, unspecified
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •abnormal findings on antenatal screening of motherO28
- •certain conditions originating in the perinatal periodP04-P96
- signs and symptoms classified in the body system chapters
- •signs and symptoms of breast,N63, N64.5
Related Codes(2)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(212)
SNOMED CT
- Static ataxia3756000
- Diabetes mellitus associated with genetic syndrome5969009
- Genetic syndromes of diabetes mellitus5969009
- Single limb ataxia11145003
- Ataxia20262006
- Ataxia (loss of muscle coordination)20262006
- Acute cerebellar ataxia caused by varicella24059009
- Varicella cerebellar ataxia24059009
- HSMN IV25362006
- Hereditary motor and sensory neuropathy type IV25362006
- Hereditary motor and sensory neuropathy, type IV25362006
- Hereditary sensory-motor neuropathy, type IV25362006
- Heredoataxia hemeralopica polyneuritiformis25362006
- Heredoataxic atactica polyneuritiformis25362006
- Heredoataxic hemeralopica polyneuritiformis25362006
- Heredopathia atactica polyneuritiformis25362006
- Phytanic acid storage disease25362006
- Refsum syndrome25362006
- Refsum's disease25362006
- Refsum-Thiebaut disease25362006
- Refsum-Thiébaut disease25362006
- Neurological muscle paresis41786007
- Neurological muscle weakness41786007
- Nutritional ataxic neuropathy56684007
- Kinetic ataxia59546009
- Motor ataxia59546009
- Hypometria69752006
- ABL - Abetalipoproteinaemia190787008
- ABL - Abetalipoproteinemia190787008
- Abetalipoproteinaemia190787008
- Abetalipoproteinemia190787008
- Apolipoprotein B deficiency190787008
- Bassen-Kornzweig disease190787008
- Homozygous familial hypobetalipoproteinaemia190787008
- Homozygous familial hypobetalipoproteinemia190787008
- Secondary cerebellar degeneration230241000
- Drug-induced cerebellar ataxia230242007
- Furukawa Takagi Nakao syndrome237611007
- Muscular atrophy, ataxia, retinitis pigmentosa, and diabetes mellitus237611007
- NARP (neurogenic muscle weakness, ataxia, retinitis pigmentosa) syndrome237984008
- NARP syndrome237984008
- Neurogenic muscle weakness, ataxia and retinitis pigmentosa237984008
- Arms ataxic250062002
- Legs ataxic250065000
- Truncal ataxia250067008
- Sensory ataxia445458007
- Hypermetria450881007
- Oral motor ataxia698036008
- PRICKLE1-related progressive myoclonic epilepsy with ataxia702326000
- Progressive myoclonic epilepsy 1B702326000
- Progressive myoclonus epilepsy with ataxia702326000
- Ataxia with isolated vitamin E deficiency702442008
- Ataxia with vitamin E deficiency702442008
- Familial isolated vitamin E deficiency702442008
- Friedreich ataxia phenotype with selective vitamin E deficiency702442008
- Friedreich-like ataxia702442008
- Acquired ataxia722968003
- Ataxia co-occurrent and due to phytanic acid storage disease724769002
- Ataxia with Refsum disease724769002
- Ataxia co-occurrent and due to abetalipoproteinaemia724770001
- Ataxia co-occurrent and due to abetalipoproteinemia724770001
- Ataxia with abetalipoproteinaemia724770001
- Ataxia with abetalipoproteinemia724770001
- Benign paroxysmal tonic upgaze of childhood with ataxia763127004
- Ouvrier Billson syndrome763127004
- Ataxia of bilateral lower extremities830119000
- Ataxia of bilateral lower limbs830119000
- Ataxia of both lower limbs830119000
- Ataxia of left and right lower limbs830119000
- Bilateral lower limb ataxia830119000
- Ataxia of bilateral upper extremities830120006
- Ataxia of bilateral upper limbs830120006
- Ataxia of left and right upper limbs830120006
- Bilateral upper limb ataxia830120006
- Ataxia due to chronic central nervous system infection838331007
- Ataxia due to chronic infection of central nervous system838331007
- Progressive truncal ataxia1119356001
- Spastic ataxia1119357005
- Progressive weakness of muscle1137511009
- Ataxia due to cerebrotendinous xanthomatosis1155955003
- Ataxia due to disorder of immune function1163092001
- Ataxia due to and following infectious disease1177016002
- Postinfectious ataxia1177016002
- Ataxia due to subpial siderosis1259092009
- Ataxia due to multiple system atrophy, cerebellar type1259094005
- Ataxia due to multiple system atrophy, cerebellar variant1259094005
- Acquired ataxia due to vitamin deficiency1269397007
- Ataxia caused by heavy metal1290830001
- Ataxia caused by ethanol1290831002
- Ataxia caused by substance1290832009
- Substance-induced ataxia1290832009
- MT-ATP6 mitochondrial disease1363509005
- Mitochondrially encoded ATP synthase membrane subunit 6-related mitochondrial disease1363509005
- Ataxic hemiparesis29951000119107
- Intermittent ataxia437901000124108
UMLS
- AtaxiaC0004134
- Ataxia (finding)C0004134
- Ataxia (loss of muscle coordination)C0004134
- Ataxia,C0004134
- Ataxia, unspecifiedC0004134
- AtaxiasC0004134
- AtaxyC0004134
- Coordination ImpairmentC0004134
- Coordination ImpairmentsC0004134
- DyssynergiaC0004134
- Impairment, CoordinationC0004134
- Impairments, CoordinationC0004134
- ataxiaC0004134
- dyssynergiaC0004134
Clinical Terms
- Ataxia of bilateral upper extremities
- Apolipoprotein B deficiency
- Genetic syndromes of diabetes mellitus
- ABL - Abetalipoproteinemia
- Spastic ataxia
- Ataxia of bilateral lower limbs
- Muscular atrophy, ataxia, retinitis pigmentosa, and diabetes mellitus
- Friedreich ataxia phenotype with selective vitamin E deficiency
- Homozygous familial hypobetalipoproteinaemia
- Nutritional ataxic neuropathy
- Ataxia of bilateral upper limbs
- Benign paroxysmal tonic upgaze of childhood with ataxia
- Ataxia due to subpial siderosis
- Ataxia with vitamin E deficiency
- Bassen-Kornzweig disease
- Varicella cerebellar ataxia
- Ataxia co-occurrent and due to abetalipoproteinaemia
- Acquired ataxia due to vitamin deficiency
- Familial isolated vitamin E deficiency
- Oral motor ataxia
- ABL - Abetalipoproteinaemia
- Ataxia of bilateral lower extremities
- Intermittent ataxia
- Ataxias
- Ataxia with abetalipoproteinaemia
- NARP (neurogenic muscle weakness, ataxia, retinitis pigmentosa) syndrome
- Phytanic acid storage disease
- Dyssynergia
- Ataxia of both lower limbs
- Coordination Impairment
- Diabetes mellitus associated with genetic syndrome
- Homozygous familial hypobetalipoproteinemia
- Acute cerebellar ataxia caused by varicella
- Heredoataxic atactica polyneuritiformis
- Progressive truncal ataxia
- Arms ataxic
- Ataxia (loss of muscle coordination)
- HSMN IV
- Ataxia caused by heavy metal
- Ouvrier Billson syndrome
- Ataxic hemiparesis
- Progressive myoclonic epilepsy 1B
- Ataxia with abetalipoproteinemia
- Ataxia of left and right lower limbs
- Heredoataxic hemeralopica polyneuritiformis
- Abetalipoproteinemia
- Secondary cerebellar degeneration
- Ataxia of left and right upper limbs
- Ataxia caused by substance
- Ataxia co-occurrent and due to abetalipoproteinemia
- Friedreich-like ataxia
- Ataxy
- Ataxia due to and following infectious disease
- Ataxia co-occurrent and due to phytanic acid storage disease
- Ataxia due to chronic infection of central nervous system
- Hereditary sensory-motor neuropathy, type IV
- Coordination Impairments
- Refsum syndrome
- Drug-induced cerebellar ataxia
- Acquired ataxia
- Impairments, Coordination
- PRICKLE1-related progressive myoclonic epilepsy with ataxia
- Legs ataxic
- Refsum's disease
- Substance-induced ataxia
- Motor ataxia
- Postinfectious ataxia
- Neurological muscle weakness
- Bilateral upper limb ataxia
- Ataxia due to cerebrotendinous xanthomatosis
- Heredopathia atactica polyneuritiformis
- Sensory ataxia
- Ataxia (finding)
- Ataxia due to disorder of immune function
- Single limb ataxia
- Neurological muscle paresis
- Truncal ataxia
- Hypermetria
- Hypometria
- Progressive weakness of muscle
- MT-ATP6 mitochondrial disease
- Static ataxia
- Abetalipoproteinaemia
- Ataxia due to multiple system atrophy, cerebellar type
- Progressive myoclonus epilepsy with ataxia
- Mitochondrially encoded ATP synthase membrane subunit 6-related mitochondrial disease
- Refsum-Thiébaut disease
- Refsum-Thiebaut disease
- Heredoataxia hemeralopica polyneuritiformis
- Impairment, Coordination
- NARP syndrome
- Ataxia with Refsum disease
- Furukawa Takagi Nakao syndrome
- Kinetic ataxia
- Neurogenic muscle weakness, ataxia and retinitis pigmentosa
- Hereditary motor and sensory neuropathy, type IV
- Ataxia due to multiple system atrophy, cerebellar variant
- Ataxia with isolated vitamin E deficiency
- Bilateral lower limb ataxia
- Ataxia due to chronic central nervous system infection
- Ataxia,
- Ataxia caused by ethanol
- Hereditary motor and sensory neuropathy type IV
Frequently Asked Questions
What is the ICD-10 code for ataxia, unspecified?
The ICD-10-CM code for ataxia, unspecified is R27.0. The full clinical description is "Ataxia, unspecified". R27.0 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code R27.0 mean?
ICD-10-CM code R27.0 represents “Ataxia, unspecified”. It is classified under Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings and is a billable/specific code that can be used on a claim.
Is R27.0 a billable code?
Yes, R27.0 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R27.0 in?
R27.0 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What codes cannot be used with R27.0?
R27.0 has Excludes1 notes indicating codes that cannot be used together with it, including: ataxic gait (R26.0); hereditary ataxia (G11.-); vertigo NOS (R42); and 1 more.
What SNOMED CT codes does R27.0 map to?
R27.0 maps to 45 SNOMED CT concepts: 190787008, 722968003, 1269397007, 24059009, 250062002, and 40 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R27.0?
R27.0 is linked to 1 UMLS Concept Unique Identifier: C0004134. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does R27.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like ataxia, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of R27.0?
R27.0 maps to the ICD-11 code: MB45.0 (Ataxia, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.