ICD-10-CM Codes
E00-E89 Endocrine, nutritional and metabolic diseases
E70-E88 Metabolic disorders
E87- Other disorders of fluid, electrolyte and acid-base balance

2020 ICD-10-CM Diagnosis Code E87.1

Hypo-osmolality and hyponatremia

2016

2017

2018

2019

2020

Billable/Specific Code

E87.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2020 edition of ICD-10-CM E87.1 became effective on October 1, 2019.
This is the American ICD-10-CM version of E87.1 - other international versions of ICD-10 E87.1 may differ.

Applicable To

Sodium [Na] deficiency

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as E87.1. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

syndrome of inappropriate secretion of antidiuretic hormone (
ICD-10-CM Diagnosis Code E22.2
Syndrome of inappropriate secretion of antidiuretic hormone
E22.2
)

The following code(s) above E87.1 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to E87.1:

E00-E89
2020 ICD-10-CM Range E00-E89
Endocrine, nutritional and metabolic diseases
Note
- All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
Type 1 Excludes
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Endocrine, nutritional and metabolic diseases
E70-E88
2020 ICD-10-CM Range E70-E88
Metabolic disorders
Type 1 Excludes
- androgen insensitivity syndrome (E34.5-)
- congenital adrenal hyperplasia (E25.0)
- Ehlers-Danlos syndrome (Q79.6-)
- hemolytic anemias attributable to enzyme disorders (D55.-)
- Marfan's syndrome (Q87.4)
- 5-alpha-reductase deficiency (E29.1)
Metabolic disorders
E87
ICD-10-CM Diagnosis Code E87
Other disorders of fluid, electrolyte and acid-base balance
Type 1 Excludes
- diabetes insipidus (E23.2)
- electrolyte imbalance associated with hyperemesis gravidarum (O21.1)
- electrolyte imbalance following ectopic or molar pregnancy (O08.5)
- familial periodic paralysis (G72.3)
Other disorders of fluid, electrolyte and acid-base balance

Approximate Synonyms

Hyponatremia
Hyponatremia (low sodium level)
Hyposmolality

Clinical Information

A disorder characterized by laboratory test results that indicate a low concentration of sodium in the blood.
Abnormally low blood sodium level.
Abnormally low sodium levels in the blood; salt depletion.
Deficiency of sodium in the blood; salt depletion. (Dorland, 27th ed)
Lower than normal levels of sodium in the circulating blood.

ICD-10-CM E87.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):

640 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes with mcc
641 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes without mcc
791 Prematurity with major problems
793 Full term neonate with major problems

Convert E87.1 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to E87.1:

Cramp(s) R25.2
ICD-10-CM Diagnosis Code R25.2
Cramp and spasm
Type 2 Excludes
carpopedal spasm (R29.0)
charley-horse (M62.831)
infantile spasms (G40.4-)
muscle spasm of back (M62.830)
muscle spasm of calf (M62.831)
- salt-depletion E87.1
Deficiency, deficient
- natrium E87.1
- salt E87.1
- sodium E87.1 (Na)
Depletion
- salt or sodium E87.1
Findings, abnormal, inconclusive, without diagnosis - see also Abnormal
- sodium (deficiency) E87.1
Hyponatremia E87.1
Hypo-osmolality E87.1
Low
- salt syndrome E87.1
Syndrome - see also Disease
- salt
  - depletion E87.1
  - low E87.1
- sick
  - cell E87.1
- hyponatremic E87.1
- hyposmolality E87.1

ICD-10-CM Codes Adjacent To E87.1

E85.81 Light chain (AL) amyloidosis

E85.82 Wild-type transthyretin-related (ATTR) amyloidosis

E85.89 Other amyloidosis

E85.9 Amyloidosis, unspecified

E86 Volume depletion

E86.0 Dehydration

E86.1 Hypovolemia

E86.9 Volume depletion, unspecified

E87 Other disorders of fluid, electrolyte and acid-base balance

E87.0 Hyperosmolality and hypernatremia

E87.1 Hypo-osmolality and hyponatremia

E87.2 Acidosis

E87.3 Alkalosis

E87.4 Mixed disorder of acid-base balance

E87.5 Hyperkalemia

E87.6 Hypokalemia

E87.7 Fluid overload

E87.70 …… unspecified

E87.71 Transfusion associated circulatory overload

E87.79 Other fluid overload

E87.8 Other disorders of electrolyte and fluid balance, not elsewhere classified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2020 ICD-10-CM Diagnosis Code E87.1

Hypo-osmolality and hyponatremia

Syndrome of inappropriate secretion of antidiuretic hormone

Endocrine, nutritional and metabolic diseases

Metabolic disorders

Other disorders of fluid, electrolyte and acid-base balance

Cramp and spasm