Diseases of the nervous system
Extrapyramidal and movement disorders
2018 ICD-10-CM Diagnosis Code G20
2016 2017 2018 Billable/Specific Code
- G20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2018 edition of ICD-10-CM G20 became effective on October 1, 2017.
- This is the American ICD-10-CM version of G20 - other international versions of ICD-10 G20 may differ.
- Idiopathic Parkinsonism or Parkinson's disease
- Paralysis agitans
- Parkinsonism or Parkinson's disease NOS
- Primary Parkinsonism or Parkinson's disease
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 G20. 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.
The following code(s) above G20
contain 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 G20
- Dementia associated with parkinson's disease
- Dementia in parkinsons disease
- Parkinsons disease
- Restrictive lung disease due to parkinsons disease
- Restrictive lung mechanics due to parkinsons disease
ICD-10-CM G20 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):
- A disease characterized as a progressive motor disability manifested by tremors, shaking, muscular rigidity, and lack of postural reflexes.
- A progressive degenerative disorder of the central nervous system characterized by loss of dopamine producing neurons in the substantia nigra and the presence of lewy bodies in the substantia nigra and locus coeruleus. Signs and symptoms include tremor which is most pronounced during rest, muscle rigidity, slowing of the voluntary movements, a tendency to fall back, and a mask-like facial expression.
- A progressive disorder of the nervous system marked by muscle tremors, muscle rigidity, decreased mobility, stooped posture, slow voluntary movements, and a mask-like facial expression.
- A progressive, degenerative neurologic disease characterized by a tremor that is maximal at rest, retropulsion (i.e. A tendency to fall backwards), rigidity, stooped posture, slowness of voluntary movements, and a masklike facial expression. Pathologic features include loss of melanin containing neurons in the substantia nigra and other pigmented nuclei of the brainstem. Lewy bodies are present in the substantia nigra and locus coeruleus but may also be found in a related condition (lewy body disease, diffuse) characterized by dementia in combination with varying degrees of parkinsonism. (Adams et al., Principles of Neurology, 6th ed, p1059, pp1067-75)
- Parkinson's disease is a disorder that affects nerve cells, or neurons, in a part of the brain that controls muscle movement. In parkinson's, neurons that make a chemical called dopamine die or do not work properly. Dopamine normally sends signals that help coordinate your movements. No one knows what damages these cells. Symptoms of parkinson's disease may include
as symptoms get worse, people with the disease may have trouble walking, talking or doing simple tasks. They may also have problems such as depression, sleep problems or trouble chewing, swallowing or speaking. Parkinson's usually begins around age 60, but it can start earlier. It is more common in men than in women. There is no cure for parkinson's disease. A variety of medicines sometimes help symptoms dramatically.
- trembling of hands, arms, legs, jaw and face
- stiffness of the arms, legs and trunk
- slowness of movement
- poor balance and coordination
- Progressive, degenerative disorder of the nervous system characterized by tremors, rigidity, bradykinesia, postural instability, and gait abnormalities; caused by a loss of neurons and a decrease of dopamine in the basal ganglia.
- 056 Degenerative nervous system disorders with mcc
- 057 Degenerative nervous system disorders without mcc
Convert G20 to ICD-9-CM
- 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
Code annotations containing back-references to G20:
- Dementia (degenerative (primary)) (old age) (persisting) F03.90
ICD-10-CM Diagnosis Code F03.90
Unspecified dementia without behavioral disturbance
2016 2017 2018 Billable/Specific Code Adult Dx (15-124 years)
- Disease, diseased - see also Syndrome
- Hemiparkinsonism G20
- Paralysis, paralytic (complete) (incomplete) G83.9
ICD-10-CM Diagnosis Code G83.9
Paralytic syndrome, unspecified
2016 2017 2018 Billable/Specific Code
- Parkinsonism (idiopathic) (primary) G20
- Pyramidopallidonigral syndrome G20
- Syndrome - see also Disease
- pyramidopallidonigral G20
ICD-10-CM Codes Adjacent To G20
Progressive spinal muscle atrophy
Other motor neuron disease
Other spinal muscular atrophies and related syndromes
Spinal muscular atrophy, unspecified
Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
Paraneoplastic neuromyopathy and neuropathy
Other systemic atrophy primarily affecting central nervous system in neoplastic disease
Systemic atrophy primarily affecting the central nervous system in myxedema
Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere
Malignant neuroleptic syndrome
Other drug-induced secondary parkinsonism
Neuroleptic induced parkinsonism
Other drug induced secondary parkinsonism
Secondary parkinsonism due to other external agents
Other secondary parkinsonism
Secondary parkinsonism, unspecified
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.