ICD-10 Coding for Hyponatremia(E87.1, P74.22)
Complete ICD-10-CM coding and documentation guide for Hyponatremia. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Hyponatremia
E87.0-E87.9Primary Range
Disorders of fluid, electrolyte and acid-base balance
This range includes codes for electrolyte imbalances, including hyponatremia.
Other transitory neonatal electrolyte and metabolic disturbances
This range includes neonatal hyponatremia, specifically for newborns.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| E87.1 | Hypo-osmolality and hyponatremia | Use when hyponatremia is the primary focus of care. |
|
| P74.22 | Neonatal hyponatremia | Use for hyponatremia in newborns (≤28 days old). |
|
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 hyponatremia
Essential facts and insights about Hyponatremia
Primary ICD-10-CM Codes for hyponatremia
Decision Criteria
clinical Criteria
- Presence of symptoms like confusion or seizures with low sodium levels.
documentation Criteria
- Two consecutive sodium values <135 mmol/L.
Applicable To
- Hyponatremia
- Hypo-osmolality
Excludes
- Dehydration (E86.0)
Clinical Validation Requirements
- Serum sodium ≤134 mmol/L
- Symptoms such as confusion, nausea, or seizures
- Etiology such as SIADH or diuretic use
Code-Specific Risks
- Ensure two low sodium values are documented.
- Avoid coding for pseudohyponatremia.
Coding Notes
- Ensure documentation includes lab results and symptoms.
P74.22 - Neonatal hyponatremia
Use for hyponatremia in newborns (≤28 days old).
Applicable To
- Hyponatremia in newborns
Excludes
- Dehydration in newborns (P74.1)
Clinical Validation Requirements
- Sodium levels <135 mmol/L in neonates
- Associated with feeding difficulties or other neonatal conditions
Coding Notes
Document neonatal age and associated conditions.
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.
Dehydration
E86.0Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Hyponatremia to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code E87.1.
Impact
Clinical: May lead to misdiagnosis or inappropriate treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential for denied claims or reduced reimbursement.
Mitigation Strategy
Ensure all symptoms are clearly documented., Link symptoms directly to lab findings.
Impact
Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.
Mitigation Strategy
Verify serum glucose levels; avoid E87.1 if glucose >250 mg/dL.
Impact
Coding E87.1 without documented low sodium levels and symptoms.
Mitigation Strategy
Ensure all clinical indicators are documented before coding.
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 Hyponatremia, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Hyponatremia
Use these documentation templates to ensure complete and accurate documentation for Hyponatremia. These templates include all required elements for proper coding and billing.
Hospital admission for hyponatremia
Specialty: Internal MedicineRequired Elements
- Serum sodium levels
- Symptoms such as confusion or seizures
- Treatment plan including fluid management
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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