2026 ICD-10-CM Diagnosis Code R34Anuria and oliguria

ICD-10-CM Codes›R00–R99›R30-R39›R34

ICD-10-CM R34
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R34 is a billable ICD-10-CM diagnosis code for anuria and oliguria. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 673 through 675, 682 through 684. 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
R34
Billable Status
Yes — Valid for Submission
Code Describes
Anuria and oliguria
Chapter
R30-R39
Symptoms and signs involving the genitourinary system

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR30-R39Symptoms and signs involving the genitourinary system
CategoryR34Anuria and oliguria
This CodeR34Anuria and oliguria

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • 24 hour urine volume - finding
  • 24 hour urine volume below reference range
  • 24 hour urine volume outside reference range
  • Acute renal failure with oliguria
  • Anuria
  • Anuria following procedure
  • Decreased urine output
  • Deficient urine secretion
  • Finding of measures of urine output
  • Oliguria
  • Oliguria following procedure
  • Suppressed urine secretion
  • Urinary loss
  • Urinary volume finding
  • Urine volume measurement finding

Tabular List NotesGuidance

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

Type 1 Excludes

  • anuria and oliguria complicating abortion or ectopic or molar pregnancy O00 O07 O08.4
  • anuria and oliguria complicating pregnancy O26.83
  • anuria and oliguria complicating the puerperium O90.49

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.

    • Anuria
    • Deficiency, deficient
      • secretion
        • urine
    • Ischuria
    • Oliguria
    • Secretion
      • urinary
        • suppression
    • Suppression
      • urine, urinary secretion
    • Urine
      • secretion
        • deficient
    • Urodialysis

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

  • Anuria

    absence of urine formation. it is usually associated with complete bilateral ureteral (ureter) obstruction, complete lower urinary tract obstruction, or unilateral ureteral obstruction when a solitary kidney is present.

  • Oliguria

    decreased urine output that is below the normal range. oliguria can be defined as urine output of less than or equal to 0.5 or 1 ml/kg/hr depending on the age.

  • Ureter

    one of a pair of thick-walled tubes that transports urine from the kidney pelvis to the urinary bladder.

  • Urine

    liquid by-product of excretion produced in the kidneys, temporarily stored in the bladder until discharge through the urethra.

  • Melanuria

    an indication of dark brown or black urine discoloration due to the presence of melanin or its precursors.

  • Anuria

    absence of urine output.

Patient EducationClinical

Urine and Urination

Your kidneys make urine by filtering wastes and extra water from your blood. The waste is called urea. Your blood carries it to the kidneys. From the kidneys, urine travels down two thin tubes called ureters to the bladder. The bladder stores urine until you are ready to urinate.

Read the full article at MedlinePlus

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

Convert R34 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
788.5 Oliguria & anuria
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R34Overview

Is R34 (Anuria and oliguria) a billable code?

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

What MS-DRG does R34 group to?

When anuria and oliguria is the principal diagnosis on an inpatient stay, it groups to MS-DRG 673, 674, 675, 682, 683, 684, with relative weights from 0.6003 to 4.2016 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R34 be a principal diagnosis?

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

What is the ICD-9 equivalent of R34?

Under the General Equivalence Mappings, anuria and oliguria converts to ICD-9-CM 788.5 (oliguria & anuria). The mapping is a direct match.

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.