What is the ICD-10 code for hyponatremia?

The ICD-10 code for hyponatremia is E87.1, which covers hypo-osmolality and hyponatremia. Ensure documentation includes low sodium levels and associated symptoms.

How is hyponatremia documented in medical records?

Document hyponatremia by recording serum sodium levels, symptoms like confusion or seizures, and the underlying cause such as SIADH or medication use.

ICD-10 Coding for Hyponatremia(E87.1, E86.0, E87.0)

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Comprehensive guide on ICD-10 coding for hyponatremia, including documentation requirements, clinical validation, and common coding pitfalls.

Also known as:

Low sodiumSodium deficiency

Related ICD-10 Code Ranges

Complete code families applicable to Hyponatremia

E00-E89Primary Range

Endocrine, nutritional and metabolic diseases

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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.	Serum sodium ≤134 mmol/L Symptoms such as confusion nausea or seizures Etiology such as SIADH or diuretic use
P74.22	Neonatal hyponatremia	Use for hyponatremia in newborns (≤28 days old).	Sodium levels <135 mmol/L in neonates Associated with feeding difficulties or other neonatal conditions

Primary ICD-10-CM Codes

Hypo-osmolality and hyponatremia

E87.1Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

DehydrationE86.0

Use when dehydration is present alongside hyponatremia.

Documentation & Coding Risks

Avoid these common issues when documenting Hyponatremia.

Inadequate documentation of symptoms

Impact

Clinical: May lead to misdiagnosis or inappropriate treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential for denied claims or reduced reimbursement.

Mitigation

Ensure all symptoms are clearly documented., Link symptoms directly to lab findings.

Coding E87.1 for pseudohyponatremia

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Verify serum glucose levels; avoid E87.1 if glucose >250 mg/dL.

Hyponatremia coding without clinical validation

Impact

Coding E87.1 without documented low sodium levels and symptoms.

Mitigation

Ensure all clinical indicators are documented before coding.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with E87.1.

Primary Code

E87.1

Hypo-osmolality and hyponatremia

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ICD-10 codes9

Coding risks3

FAQs2

ICD-10 Coding for Hyponatremia(E87.1, E86.0, E87.0)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for hyponatremia?

How is hyponatremia documented in medical records?

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