What is the ICD-10 code for severe hypernatremia?

The ICD-10 code for severe hypernatremia is E87.0, used when sodium levels are ≥160 mmol/L or when significant symptoms like seizures are present.

How is mild hypernatremia coded in ICD-10?

Mild hypernatremia, with sodium levels between 145-159 mmol/L and no significant symptoms, is coded as E87.2 in ICD-10.

ICD-10 Coding for Hypernatremia(E87.0, E23.2, E87.1)

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Comprehensive guide to ICD-10 coding for hypernatremia, including severe and mild cases, documentation requirements, and common pitfalls.

Also known as:

High sodium levelsSodium excess

Related ICD-10 Code Ranges

Complete code families applicable to Hypernatremia

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
E87.0	Hyperosmolality and hypernatremia	Use for severe or symptomatic cases of hypernatremia.	Sodium level ≥160 mmol/L Presence of neurological symptoms such as seizures or confusion
E87.2	Hypernatremia, unspecified	Use for mild or asymptomatic cases of hypernatremia.	Sodium level 145-159 mmol/L No significant symptoms

Primary ICD-10-CM Codes

Hyperosmolality and hypernatremia

E87.0Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

HyponatremiaE87.1

Hyperosmolality and hypernatremiaE87.0

Documentation & Coding Risks

Avoid these common issues when documenting Hypernatremia.

Misdocumenting sodium levels

Impact

Clinical: Misleading clinical picture, Regulatory: Potential audit issues, Financial: Incorrect billing

Mitigation

Double-check lab results, Use standardized documentation templates

Coding mild hypernatremia as severe without symptoms

Impact

Reimbursement: Potential overpayment and subsequent audit recovery, Compliance: Non-compliance with coding guidelines, Data Quality: Inaccurate clinical data representation

Mitigation

Ensure documentation supports the severity with symptoms or lab values.

Severity coding

Impact

Incorrectly coding the severity of hypernatremia

Mitigation

Ensure documentation supports the coded severity level.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with E87.0.

Primary Code

E87.0

Hyperosmolality and hypernatremia

Quick Navigation

ICD-10 codes4

Coding risks3

FAQs2

ICD-10 Coding for Hypernatremia(E87.0, E23.2, E87.1)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for severe hypernatremia?

How is mild hypernatremia coded in ICD-10?

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