G21.9
BillableSecondary parkinsonism, unspecified
Secondary parkinsonism, unspecified
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 period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Also Known As / Clinical Terms
SNOMED CT
UMLS
- Disorders presenting primarily with parkinsonismC0030569
- PARKINSON DIS SECONDC0030569
- PARKINSON DIS SYMPTOMATICC0030569
- PARKINSONISM SECONDC0030569
- Parkinson Disease, SecondaryC0030569
- Parkinson Disease, SymptomaticC0030569
- Parkinsonism, SecondaryC0030569
- Parkinsonism, SymptomaticC0030569
- SECOND PARKINSONISMC0030569
- SYMPTOMATIC PARKINSON DISC0030569
- Secondary Parkinson DiseaseC0030569
- Secondary Parkinson diseaseC0030569
- Secondary Parkinson's diseaseC0030569
- Secondary ParkinsonismC0030569
- Secondary parkinsonismC0030569
- Secondary parkinsonism (disorder)C0030569
- Secondary parkinsonism, unspecifiedC0030569
- Symptomatic Parkinson DiseaseC0030569
- Symptomatic ParkinsonismC0030569
- Symptomatic parkinsonismC0030569
- Symptomatic parkinsonism (disorder)C0030569
- parkinson's disease secondaryC0030569
- parkinsonism secondaryC0030569
- secondary parkinsonismC0030569
Frequently Asked Questions
What is ICD-10 code G21.9?
ICD-10-CM code G21.9 represents "Secondary parkinsonism, unspecified". It is a billable/specific code that can be used on a claim.
Is G21.9 a billable code?
Yes, G21.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G21.9 in?
G21.9 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G21.9?
G21.9 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 SNOMED CT codes does G21.9 map to?
G21.9 maps to 1 SNOMED CT concept: 230292008. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G21.9?
G21.9 is linked to 1 UMLS Concept Unique Identifier: C0030569. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.