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

      2016 2017 2018 2019 2020 Billable/Specific Code
    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

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    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:

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.