ICD-10-CM Codes
R00-R99
R25-R29
R27-
2023 ICD-10-CM Diagnosis Code R27.0

2023 ICD-10-CM Diagnosis Code R27.0

Ataxia, unspecified

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

R27.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM R27.0 became effective on October 1, 2022.
This is the American ICD-10-CM version of R27.0 - other international versions of ICD-10 R27.0 may differ.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as R27.0. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

ataxia following cerebrovascular disease (
ICD-10-CM Diagnosis Code I69
Sequelae of cerebrovascular disease
Note
- Category I69 is to be used to indicate conditions in I60-I67 as the cause of sequelae. The 'sequelae' include conditions specified as such or as residuals which may occur at any time after the onset of the causal condition
Type 1 Excludes
- personal history of cerebral infarction without residual deficit (Z86.73)
- personal history of prolonged reversible ischemic neurologic deficit (PRIND) (Z86.73)
- personal history of reversible ischemic neurologcial deficit (RIND) (Z86.73)
- sequelae of traumatic intracranial injury (S06.-)
I69
. with final characters -93)

The following code(s) above R27.0 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to R27.0:

R00-R99
2023 ICD-10-CM Range R00-R99
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Note
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Type 2 Excludes
- 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)
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
R27
ICD-10-CM Diagnosis Code R27
Other lack of coordination
Type 1 Excludes
- ataxic gait (R26.0)
- hereditary ataxia (G11.-)
- vertigo NOS (R42)
Other lack of coordination

Approximate Synonyms

Ataxia
Ataxia (loss of muscle coordination)

Clinical Information

A disorder characterized by lack of coordination of muscle movements resulting in the impairment or inability to perform voluntary activities.
Awkwardness in motor behavior associated with loss of afferent information from the moving part or with loss of control mechanism of the cerebellum.
Impairment of the ability to perform smoothly coordinated voluntary movements. This condition may affect the limbs, trunk, eyes, pharynx, larynx, and other structures. Ataxia may result from impaired sensory or motor function. Sensory ataxia may result from posterior column injury or peripheral nerve diseases. Motor ataxia may be associated with cerebellar diseases; cerebral cortex diseases; thalamic diseases; basal ganglia diseases; injury to the red nucleus; and other conditions.
Lack of coordination of muscle movements resulting in the impairment or inability to perform voluntary activities. Causes include peripheral nerve disorders, posterior column injuries, cerebral and cerebellar disorders, basal ganglia disorders, and thalamic disorders.
Loss of coordination of voluntary muscular movement.
Loss of muscle coordination.
Unable to coordinate muscle movement

ICD-10-CM R27.0 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

091 Other disorders of nervous system with mcc
092 Other disorders of nervous system with cc
093 Other disorders of nervous system without cc/mcc

Convert R27.0 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Code annotations containing back-references to R27.0:

Type 1 Excludes: R26

ICD-10-CM Diagnosis Code R26
Abnormalities of gait and mobility
Type 1 Excludes
- ataxia NOS (R27.0)
- hereditary ataxia (G11.-)
- locomotor (syphilitic) ataxia (A52.11)
- immobility syndrome (paraplegic) (M62.3)

Diagnosis Index entries containing back-references to R27.0:

Ataxia, ataxy, ataxic R27.0
Lack of
- coordination R27.9
  ICD-10-CM Diagnosis Code R27.9
  Unspecified lack of coordination
  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  - ataxia R27.0

ICD-10-CM Codes Adjacent To R27.0

R25.9 Unspecified abnormal involuntary movements

R26 Abnormalities of gait and mobility

R26.0 Ataxic gait

R26.1 Paralytic gait

R26.2 Difficulty in walking, not elsewhere classified

R26.8 Other abnormalities of gait and mobility

R26.81 Unsteadiness on feet

R26.89 Other abnormalities of gait and mobility

R26.9 Unspecified abnormalities of gait and mobility

R27 Other lack of coordination

R27.0 Ataxia, unspecified

R27.8 Other lack of coordination

R27.9 Unspecified lack of coordination

R29 Other symptoms and signs involving the nervous and musculoskeletal systems

R29.0 Tetany

R29.1 Meningismus

R29.2 Abnormal reflex

R29.3 Abnormal posture

R29.4 Clicking hip

R29.5 Transient paralysis

R29.6 Repeated falls

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code R27.0

Ataxia, unspecified

Sequelae of cerebrovascular disease

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Other lack of coordination

Abnormalities of gait and mobility

Unspecified lack of coordination