ICD-10-CM Codes
R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
R25-R29 Symptoms and signs involving the nervous and musculoskeletal systems
R27- Other lack of coordination
2021 ICD-10-CM Diagnosis Code R27

2021 ICD-10-CM Diagnosis Code R27

Other lack of coordination

2016

2017

2018

2019

2020

2021

Non-Billable/Non-Specific Code

R27 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2021 edition of ICD-10-CM R27 became effective on October 1, 2020.
This is the American ICD-10-CM version of R27 - other international versions of ICD-10 R27 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. 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.

ataxic gait (
ICD-10-CM Diagnosis Code R26.0
Ataxic gait
Applicable To
- Staggering gait
R26.0
)
hereditary ataxia (
ICD-10-CM Diagnosis Code G11
- G11 Hereditary ataxia
  - G11.0 Congenital nonprogressive ataxia
  - G11.1 Early-onset cerebellar ataxia
    - G11.10 …… unspecified
    - G11.11 Friedreich ataxia
    - G11.19 Other early-onset cerebellar ataxia
  - G11.2 Late-onset cerebellar ataxia
  - G11.3 Cerebellar ataxia with defective DNA repair
  - G11.4 Hereditary spastic paraplegia
  - G11.8 Other hereditary ataxias
  - G11.9 Hereditary ataxia, unspecified
G11.-
)
vertigo NOS (
ICD-10-CM Diagnosis Code R42
Dizziness and giddiness
Applicable To
- Light-headedness
- Vertigo NOS
Type 1 Excludes
- vertiginous syndromes (H81.-)
- vertigo from infrasound (T75.23)
R42
)

The following code(s) above R27 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:

R00-R99
2021 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

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

Code annotations containing back-references to R27:

Type 1 Excludes: F82

ICD-10-CM Diagnosis Code F82
Specific developmental disorder of motor function
Applicable To
- Clumsy child syndrome
- Developmental coordination disorder
- Developmental dyspraxia
Type 1 Excludes
- abnormalities of gait and mobility (R26.-)
- lack of coordination (R27.-)
Type 2 Excludes
- lack of coordination secondary to intellectual disabilities (F70-F79)

ICD-10-CM Codes Adjacent To R27

R25.8 Other abnormal involuntary movements

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

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

2021 ICD-10-CM Diagnosis Code R27

Other lack of coordination

Ataxic gait

Dizziness and giddiness

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

Specific developmental disorder of motor function