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G21.9 - Secondary parkinsonism, unspecified


The ICD 10 Code for Secondary parkinsonism, unspecified is listed as G21.9.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: G21.9
Description: Secondary parkinsonism, unspecified
Diagnostic Related Groups
(MS-DRG v30.0)
056 - Degenerative Nervous System Disorders W Mcc
057 - Degenerative Nervous System Disorders W/o Mcc
Chapter Diseases of the nervous system (G00-G99)
Block Extrapyramidal and movement disorders (G20-G26)
Parent G21 - Secondary parkinsonism
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 332.1 - Secondary parkinsonism (approximate)
ICD-10-CM Siblings (same level / similar specificity) of G21.9:
G21.0 - Malignant neuroleptic syndrome
G21.1 - Other drug-induced secondary parkinsonism
G21.2 - Secondary parkinsonism due to other external agents
G21.3 - Postencephalitic parkinsonism
G21.4 - Vascular parkinsonism
G21.8 - Other secondary parkinsonism