G21.1
Non-billableOther drug-induced secondary parkinsonism
Other drug-induced secondary parkinsonism
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Child Codes (2)
Related Codes(6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(3)
Frequently Asked Questions
What is the ICD-10 code for other drug-induced secondary parkinsonism?
The ICD-10-CM code for other drug-induced secondary parkinsonism is G21.1. The full clinical description is "Other drug-induced secondary parkinsonism". G21.1 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G21.1 mean?
ICD-10-CM code G21.1 represents “Other drug-induced secondary parkinsonism”. It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G21.1 a billable code?
No, G21.1 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under G21.1.
What chapter is G21.1 in?
G21.1 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G21.1?
G21.1 has Excludes1 notes indicating codes that cannot be used together with it, including: Huntington's disease (G10); neurocognitive disorder with Lewy bodies (G31.83); Shy-Drager syndrome (G90.3); and 1 more.
What are the subcategories under G21.1?
G21.1 has 2 child codes, including: G21.11 (Neuroleptic induced parkinsonism), G21.19 (Other drug induced secondary parkinsonism).
What are the UMLS CUIs for G21.1?
G21.1 is linked to 1 UMLS Concept Unique Identifier: C0477356. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G21.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other drug-induced secondary parkinsonism affect a person's functioning: body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of G21.1?
G21.1 maps to the ICD-11 code: 8A00.24 (Drug-induced parkinsonism).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.