Valid for Submission
G21.8 is a billable diagnosis code used to specify a medical diagnosis of other secondary parkinsonism. The code G21.8 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code G21.8 might also be used to specify conditions or terms like infection causing parkinsonism, parkinsonism co-occurrent and due to acute infection, parkinsonism due to and following injury of head, parkinsonism due to hereditary spastic paraplegia, parkinsonism due to heredodegenerative disorder , parkinsonism due to human immunodeficiency virus infection, etc.
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code G21.8 are found in the index:
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Infection causing parkinsonism
- Parkinsonism co-occurrent and due to acute infection
- Parkinsonism due to and following injury of head
- Parkinsonism due to hereditary spastic paraplegia
- Parkinsonism due to heredodegenerative disorder
- Parkinsonism due to human immunodeficiency virus infection
- Parkinsonism due to mass lesion of brain
- Parkinsonism following infection
- Parkinsonism with calcification of basal ganglia
- PARKINSON DISEASE SECONDARY-. conditions which feature clinical manifestations resembling primary parkinson disease that are caused by a known or suspected condition. examples include parkinsonism caused by vascular injury drugs trauma toxin exposure neoplasms infections and degenerative or hereditary conditions. clinical features may include bradykinesia rigidity parkinsonian gait and masked facies. in general tremor is less prominent in secondary parkinsonism than in the primary form. from joynt clinical neurology 1998 ch38 pp39 42
Convert G21.8 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code G21.8 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Also called: Paralysis agitans, Shaking palsy
Parkinson's disease (PD) is a type of movement disorder. It happens when nerve cells in the brain don't produce enough of a brain chemical called dopamine. Sometimes it is genetic, but most cases do not seem to run in families. Exposure to chemicals in the environment might play a role.
Symptoms begin gradually, often on one side of the body. Later they affect both sides. They include
- Trembling of hands, arms, legs, jaw and face
- Stiffness of the arms, legs and trunk
- Slowness of movement
- Poor balance and coordination
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.
There is no lab test for PD, so it can be difficult to diagnose. Doctors use a medical history and a neurological examination to diagnose it.
PD usually begins around age 60, but it can start earlier. It is more common in men than in women. There is no cure for PD. A variety of medicines sometimes help symptoms dramatically. Surgery and deep brain stimulation (DBS) can help severe cases. With DBS, electrodes are surgically implanted in the brain. They send electrical pulses to stimulate the parts of the brain that control movement.
NIH: National Institute of Neurological Disorders and Stroke
- Deep brain stimulation (Medical Encyclopedia)
- Parkinson disease (Medical Encyclopedia)
- Secondary parkinsonism (Medical Encyclopedia)
- Swallowing problems (Medical Encyclopedia)
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