G21.3 - Postencephalitic parkinsonism
The ICD 10 Code for Postencephalitic parkinsonism is listed as G21.3.
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: | G21.3
|
| Description: | Postencephalitic parkinsonism |
| 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 G21.3: | |
| G21.0 - Malignant neuroleptic syndrome | |
| G21.1 - Other drug-induced secondary parkinsonism | |
| G21.2 - Secondary parkinsonism due to other external agents | |
| G21.4 - Vascular parkinsonism | |
| G21.8 - Other secondary parkinsonism | |
| G21.9 - Secondary parkinsonism, unspecified | |