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ICD-10-CM Codes Browse (Tabular) Diagnostic External Drug Neoplasm

G21.9 – Secondary parkinsonism, unspecified

Overview

Coding Notes

Active
Billable, valid for HIPAA-covered transactions

GEM Conversion to ICD-9 CM

Fs: 10000 – Secondary parkinsonism

MDC / MS-DRG Reference

DEGENERATIVE NERVOUS SYSTEM DISORDERS WITH MCC
DEGENERATIVE NERVOUS SYSTEM DISORDERS WITHOUT MCC

Back Reference of Diagnostic Codes

Parkinsonism (idiopathic) (primary) G20
secondary G21.9

Sibling Codes

Malignant neuroleptic syndrome
Other drug-induced secondary parkinsonism
Secondary parkinsonism due to other external agents
Postencephalitic parkinsonism
Vascular parkinsonism
Other secondary parkinsonism

Parent Sibling Codes

Parkinson's disease
Secondary parkinsonism
Other degenerative diseases of basal ganglia
Dystonia
Other extrapyramidal and movement disorders
Extrapyramidal and movement disorders in diseases classified elsewhere

View in Tabular

Code Title
G00-G99 Diseases of the nervous system (G00-G99)
G20-G26 Extrapyramidal and movement disorders (G20-G26)
G21 Secondary parkinsonism
G21.9 Secondary parkinsonism, unspecified