2026 ICD-10-CM Diagnosis Code R82.991Hypocitraturia

ICD-10-CM Codes›R00–R99›R80-R82›R82

ICD-10-CM R82.991
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R82.991 is a billable ICD-10-CM diagnosis code for hypocitraturia. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Genitourinary signs and symptoms.

Code Identity

ICD-10-CM Code
R82.991
Billable Status
Yes — Valid for Submission
Code Describes
Hypocitraturia
Short Description
Hypocitraturia
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 CodeR82.991Hypocitraturia

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.

    • Hypocitraturia

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

  • Hypocitraturia

    abnormally low level of citrate in the urine.

Patient EducationClinical

Metabolic Disorders

Metabolism is the process your body uses to get or make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive system break the food parts down into sugars and acids, your body's fuel.

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement R82.991 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 R82.991Overview

Is R82.991 (Other abnormal findings in urine) a billable code?

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

What MS-DRG does R82.991 group to?

When hypocitraturia 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 R82.991 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the hypocitraturia 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.