ICD-10 Coding for SIADH(E22.2)
Complete ICD-10-CM coding and documentation guide for SIADH. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to SIADH
E22-E22.9Primary Range
Hyperfunction of pituitary gland
This range includes conditions related to the hyperfunction of the pituitary gland, including SIADH.
Disorders of fluid, electrolyte and acid-base balance
This range includes disorders like hyponatremia, which can be a manifestation of SIADH.
Key Information: ICD-10 code for SIADH
Essential facts and insights about SIADH
Primary ICD-10-CM Code for siadh
Decision Criteria
clinical Criteria
- Presence of hyponatremia with euvolemic status and exclusion of other causes
documentation Criteria
- Link SIADH to an underlying cause if known
Applicable To
- SIADH
Excludes
- Cerebral salt wasting syndrome
Clinical Validation Requirements
- Serum sodium <130 mmol/L
- Urine osmolality >100 mOsm/kg
- Urine sodium >40 mmol/L
- Euvolemic status
Code-Specific Risks
- Misclassification if underlying cause is not documented
- Incorrect sequencing if etiology is not coded first
Coding Notes
- Ensure documentation supports SIADH diagnosis with lab values and clinical indicators.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Hypo-osmolality and hyponatremia
E87.1Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting SIADH to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code E22.2.
Impact
Clinical: Misdiagnosis of SIADH., Regulatory: Non-compliance with clinical guidelines., Financial: Potential denial of claims.
Mitigation Strategy
Ensure comprehensive differential diagnosis is documented., Include thyroid and adrenal function tests.
Impact
Reimbursement: Incorrect DRG assignment leading to potential underpayment., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.
Mitigation Strategy
Always code E22.2 as primary if SIADH is documented.
Impact
Claims for SIADH without lab values may be audited.
Mitigation Strategy
Ensure all lab results are documented and linked to the diagnosis.
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 SIADH, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for SIADH
Use these documentation templates to ensure complete and accurate documentation for SIADH. These templates include all required elements for proper coding and billing.
SIADH secondary to medication
Specialty: EndocrinologyRequired Elements
- Serum sodium levels
- Urine osmolality
- Urine sodium
- Volume status
- Medication history
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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