2026 ICD-10-CM Diagnosis Code R33.0Drug induced retention of urine

ICD-10-CM Codes›R00–R99›R30-R39›R33

ICD-10-CM R33.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R33.0 is a billable ICD-10-CM diagnosis code for drug induced retention of urine. 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 retention of urine. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Drug induced or toxic related condition and Genitourinary signs and symptoms.

Code Identity

ICD-10-CM Code
R33.0
Billable Status
Yes — Valid for Submission
Code Describes
Drug induced retention of urine
Short Description
Drug induced retention of urine
Same as the full description in the CMS dataset.
Parent Code
R33
Retention of urine

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 CodeR33.0Drug induced retention of urine

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Retention of urine
  • Retention of urine caused by drug

Tabular List NotesGuidance

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

Use Additional Code

  • code for adverse effect, if applicable, to identify drug T36 T50

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.

    • Retention
      • urine
        • drug-induced
    • Retention
      • urine
        • organic
          • drug-induced
    • Urine
      • retention or stasis
        • organic
          • drug-induced

Clinical ClassificationClinical

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

CCSR INJ030
Drug induced or toxic related condition
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR SYM011
Genitourinary signs and symptoms
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Drug Reactions

Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions, such as drug interactions, side effects, and allergies.

The full article covers:

  • What is a drug interaction?
  • What are side effects?
  • What are drug allergies?
  • How can I stay safe when taking medicines?

Read the full article at MedlinePlus

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

Convert R33.0 to ICD-9-CMHistory

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

ICD-9-CM
788.29 Oth spcf retention urine
Approximate The match is approximate rather than exact.

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 R33.0Overview

Is R33.0 (Retention of urine) a billable code?

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

What MS-DRG does R33.0 group to?

When drug induced retention of urine 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 R33.0 be a principal diagnosis?

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

What is the ICD-9 equivalent of R33.0?

Under the General Equivalence Mappings, drug induced retention of urine converts to ICD-9-CM 788.29 (oth spcf retention urine). The mapping is approximate, so confirm the match fits the documentation.

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.