ICD-10 Coding for Elevated Parathyroid Hormone(E21.0, E21.1)
Complete ICD-10-CM coding and documentation guide for Elevated Parathyroid Hormone. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Elevated Parathyroid Hormone
E21.0-E21.4Primary Range
Hyperparathyroidism and other disorders of parathyroid gland
This range includes primary, secondary, and tertiary hyperparathyroidism, which are the main conditions associated with elevated parathyroid hormone levels.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| E21.0 | Primary hyperparathyroidism | Use when hypercalcemia and elevated PTH are confirmed with imaging or lab tests indicating parathyroid adenoma or hyperplasia. |
|
| E21.1 | Secondary hyperparathyroidism, not elsewhere classified | Use when secondary causes such as vitamin D deficiency are documented. |
|
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 elevated parathyroid hormone
Essential facts and insights about Elevated Parathyroid Hormone
Primary ICD-10-CM Codes for elevated parathyroid hormone
Decision Criteria
clinical Criteria
- Presence of parathyroid adenoma confirmed by imaging.
Applicable To
- Parathyroid adenoma
- Parathyroid hyperplasia
Clinical Validation Requirements
- Serum calcium >10.5 mg/dL on 2+ tests
- Intact PTH >65 pg/mL
- 24h urine calcium >250 mg (women) / >300 mg (men)
Code-Specific Risks
- Misclassification if imaging/lab results are not documented.
Coding Notes
- Ensure imaging and lab results are documented to support the diagnosis.
E21.1 - Secondary hyperparathyroidism, not elsewhere classified
Use when secondary causes such as vitamin D deficiency are documented.
Applicable To
- Vitamin D deficiency
Excludes
- Secondary hyperparathyroidism of renal origin (N25.81)
Clinical Validation Requirements
- Normal/low calcium + elevated PTH
- Confirmed vitamin D deficiency (25-OH-D <20 ng/mL)
Coding Notes
Document the specific non-renal cause of secondary hyperparathyroidism.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Elevated Parathyroid Hormone to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code E21.0.
Impact
Clinical: May lead to inappropriate treatment plans., Regulatory: Non-compliance with coding standards., Financial: Potential for denied claims.
Mitigation Strategy
Ensure documentation includes specific type and cause., Use decision trees for code selection.
Impact
Reimbursement: May lead to reduced reimbursement rates., Compliance: Non-compliance with coding guidelines., Data Quality: Decreases accuracy of health records.
Mitigation Strategy
Ensure documentation specifies the type of hyperparathyroidism.
Impact
High risk of audit if unspecified codes are used without justification.
Mitigation Strategy
Ensure documentation clearly specifies the type of hyperparathyroidism.
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 Elevated Parathyroid Hormone, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Elevated Parathyroid Hormone
Use these documentation templates to ensure complete and accurate documentation for Elevated Parathyroid Hormone. These templates include all required elements for proper coding and billing.
Primary Hyperparathyroidism Diagnosis
Specialty: EndocrinologyRequired Elements
- Serum calcium levels
- Intact PTH levels
- Imaging results
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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