2026 ICD-10-CM Diagnosis Code R33Retention of urine

ICD-10-CM Codes›R00–R99›R30-R39›R33

ICD-10-CM R33
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R33 is a non-billable ICD-10-CM category code for retention of urine, so it cannot be submitted on claims. Use a more specific code from this category instead, such as R33.0, R33.8, and R33.9. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established.

Code Identity

ICD-10-CM Code
R33
Billable Status
No — Non-Billable Category
Code Describes
Retention of urine
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
CategoryR33Retention of urine
This CodeR33Retention of urine

Specific Coding for Retention of urineOverview

Non-specific codes like R33 require more characters. Use one of these billable codes instead:

  • Use R33.0 for Drug induced retention of urine

  • Use R33.8 for Other retention of urine

  • Use R33.9 for Retention of urine, unspecified

Tabular List NotesGuidance

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

Type 1 Excludes

  • psychogenic retention of urine F45.8

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.

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 R33Overview

Is R33 (Retention of urine) a billable code?

No. This is a category header that groups the codes for retention of urine, and headers cannot be submitted on claims. Claims for retention of urine need a more specific code from this category, such as R33.0, R33.8, and R33.9.

Can R33 be a principal diagnosis?

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