2026 ICD-10-CM Diagnosis Code R82.994Hypercalciuria

ICD-10-CM Codes›R00–R99›R80-R82›R82

ICD-10-CM R82.994
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R82.994 is a billable ICD-10-CM diagnosis code for hypercalciuria. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 695 through 696. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as familial hypomagnesemia-hypercalciuria. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Genitourinary signs and symptoms.

Code Identity

ICD-10-CM Code
R82.994
Billable Status
Yes — Valid for Submission
Code Describes
Hypercalciuria
Short Description
Hypercalciuria
Same as the full description in the CMS dataset.
Parent Code
R82.99
Other abnormal findings in urine

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR80-R82Abnormal findings on examination of urine, without diagnosis
CategoryR82Other and unspecified abnormal findings in urine
This CodeR82.994Hypercalciuria

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Familial hypomagnesemia-hypercalciuria
  • Familial primary hypomagnesemia with hypercalciuria and nephrocalcinosis
  • Hypercalciuria
  • Urine calcium above reference range

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Idiopathic hypercalciuria

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Calciuria
    • Hypercalciuria, idiopathic

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM011
Genitourinary signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hypercalciuria

    excretion of abnormally high level of calcium in the urine, greater than 4 mg/kg/day.

Patient EducationClinical

Fluid and Electrolyte Balance

Electrolytes are minerals that have an electric charge when they are dissolved in water or body fluids, including blood. The electric charge can be positive or negative. You have electrolytes in your blood, urine (pee), tissues, and other body fluids.

The full article covers:

  • What are electrolytes?
  • What are the different types of electrolytes in your body?
  • What is an electrolyte imbalance?
  • What are the different types of electrolyte imbalances?
  • How are electrolyte imbalances diagnosed?
  • What are the treatments for electrolyte imbalances?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code History & ChangesHistory

Replacement R82.994 replaces the following previously assigned code(s):

  • R82.99 - Other abnormal findings in urine
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R82.994Overview

Is R82.994 (Other abnormal findings in urine) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hypercalciuria on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R82.994 group to?

When hypercalciuria is the principal diagnosis on an inpatient stay, it groups to MS-DRG 695, 696, with relative weights from 0.6890 to 1.1438 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R82.994 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the hypercalciuria is established, that condition takes the principal position instead.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.