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ICD-10-CM Code G21.3
Postencephalitic parkinsonism

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

G21.3 is a billable ICD code used to specify a diagnosis of postencephalitic parkinsonism. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code G213 is used to code Postencephalitic parkinsonism

Post-encephalitic Parkinsonism is a disease believed to be caused by a viral illness, that triggers degeneration of the nerve cells in the substantia nigra. Overall, this degeneration leads to clinical parkinsonism.

Specialty: Neurology
MeSH Code: D010301
ICD 9 Code: 310.8
Source: Wikipedia

MS-DRG Mapping

  • DRG Group #056-057 - Degenerative nervous system disorders with MCC.
  • DRG Group #056-057 - Degenerative nervous system disorders without MCC.

ICD-10-CM Alphabetical Index References for 'G21.3 - Postencephalitic parkinsonism'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G21.3. Click on any term below to browse the alphabetical index.


Secondary parkinsonism (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code G21.3 and a single ICD9 code, 332.1 is an approximate match for comparison and conversion purposes.

Parent Code: G21 - Secondary parkinsonism

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/G213