ICD-10 Coding for Drug-Induced Parkinsonism(G21.19, G21.11)
Complete ICD-10-CM coding and documentation guide for Drug-Induced Parkinsonism. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Drug-Induced Parkinsonism
G21.1-G21.9Primary Range
Other Secondary Parkinsonism
This range includes codes for parkinsonism caused by drugs, distinguishing between neuroleptic and other drug-induced causes.
Adverse Effects of Antipsychotics and Other Psychotropics
These codes are used to specify the adverse effect of drugs causing parkinsonism.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| G21.19 | Other drug-induced secondary parkinsonism | Use when parkinsonism is caused by drugs other than neuroleptics, such as metoclopramide or valproate. |
|
| G21.11 | Neuroleptic-induced parkinsonism | Use when parkinsonism is caused by neuroleptic drugs. |
|
Clinical Decision Support
Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.
Key Information: ICD-10 code for drug-induced parkinsonism
Essential facts and insights about Drug-Induced Parkinsonism
Primary ICD-10-CM Codes for drug induced parkinsonism
Decision Criteria
clinical Criteria
- Symptoms improve after stopping the drug.
documentation Criteria
- Explicit mention of drug and symptom timeline.
Applicable To
- Parkinsonism due to drugs other than neuroleptics
Excludes
- Neuroleptic-induced parkinsonism (G21.11)
Clinical Validation Requirements
- Documented temporal relationship between drug initiation and symptom onset
- Resolution of symptoms after drug cessation
Code-Specific Risks
- Confusion with neuroleptic-induced parkinsonism
Coding Notes
- Ensure documentation specifies the drug and timeline of symptom onset.
G21.11 - Neuroleptic-induced parkinsonism
Use when parkinsonism is caused by neuroleptic drugs.
Applicable To
- Parkinsonism due to neuroleptic drugs
Excludes
- Other drug-induced parkinsonism (G21.19)
Clinical Validation Requirements
- Symptoms resolve after neuroleptic discontinuation
- Normal DaTscan differentiating from Parkinson's disease
Coding Notes
Ensure documentation clearly links symptoms to neuroleptic use.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Differential Codes
Alternative codes to consider when ruling out similar conditions to the primary diagnosis.
Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Drug-Induced Parkinsonism to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code G21.19.
Impact
Clinical: May lead to inappropriate treatment decisions., Regulatory: Increases risk of audit findings., Financial: Potential for denied claims due to insufficient documentation.
Mitigation Strategy
Ensure detailed drug history is recorded., Specify symptom onset and resolution.
Impact
Reimbursement: Incorrect coding may lead to improper DRG assignment and reimbursement., Compliance: Misclassification can result in compliance issues during audits., Data Quality: Affects the accuracy of clinical data and patient records.
Mitigation Strategy
Use G21.11 or G21.19 with appropriate T-code for drug causality.
Impact
Failure to document drug causality can lead to audit issues.
Mitigation Strategy
Ensure all records include specific drug names and symptom timelines.
Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.
Frequently Asked Questions
Common questions about ICD-10 coding for Drug-Induced Parkinsonism, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Drug-Induced Parkinsonism
Use these documentation templates to ensure complete and accurate documentation for Drug-Induced Parkinsonism. These templates include all required elements for proper coding and billing.
Neurology Progress Note for DIP
Specialty: NeurologyRequired Elements
- Subjective: Patient's symptom description and drug history
- Objective: Physical exam findings
- Assessment: Diagnosis linking drug to symptoms
- Plan: Treatment and monitoring strategy
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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