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Diagnosis Code

G21.2 SECONDARY PARKINSONISM DUE TO OTHER EXTERNAL AGENTS


Code Information

Diagnosis Code: G21.2

Short Description: Secondary parkinsonism due to other external agents

Long Description: Secondary parkinsonism due to other external agents

The code G21.2 is VALID for claim submission

Code Classification:

  • Diseases of the nervous system (G00–G99)
    • Extrapyramidal and movement disorders (G20-G26)
      • Secondary parkinsonism (G21)
        • G21.2 Secondary parkinsonism due to other external agents

Code Version: 2022 ICD-10-CM


Synonyms

  • Carbon monoxide encephalopathy
  • Carbon monoxide-induced parkinsonism
  • MPTP-induced parkinsonism
  • Parkinsonism caused by carbon disulfide
  • Parkinsonism caused by cyanide
  • Pesticide-induced Parkinsonism
  • Toxin-induced parkinsonism

References to Index of Diseases and Injuries

The code G21.2 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Code First:
    • (@T51*-@T65*) to identify external agent

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
G21.2 Right Arrow 332.1 Secondary parkinsonism

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
G21 Secondary parkinsonism
G21.0 Malignant neuroleptic syndrome
G21.1 Other drug-induced secondary parkinsonism
G21.11 Neuroleptic induced parkinsonism
G21.19 Other drug induced secondary parkinsonism
G21.3 Postencephalitic parkinsonism
G21.4 Vascular parkinsonism
G21.8 Other secondary parkinsonism
G21.9 Secondary parkinsonism, unspecified

This page was last updated on: 10/1/2023

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