2026 ICD-10-CM Diagnosis Code R82.79Other abnormal findings on microbiological examination of urine

ICD-10-CM Codes›R00–R99›R80-R82›R82

ICD-10-CM R82.79
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R82.79 is a billable ICD-10-CM diagnosis code for other abnormal findings on microbiological examination 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 abnormal findings on microbiological examination of urine. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Genitourinary signs and symptoms.

Code Identity

ICD-10-CM Code
R82.79
Billable Status
Yes — Valid for Submission
Code Describes
Other abnormal findings on microbiological examination of urine
Short Description
Other abnormal findings on microbiolog examination of urine
Parent Code
R82.7
Abnormal findings on microbiological examination of 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 CodeR82.79Other abnormal findings on microbiological examination of urine

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal findings on microbiological examination of urine
  • Leukocytes in urine
  • Urine culture - mixed growth
  • Urine culture - Proteus
  • Urine culture: organisms - finding
  • Urine microscopy: orgs/FB's - finding
  • Urine microscopy: parasites present
  • Viruria

Tabular List NotesGuidance

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

Inclusion Terms

  • Positive culture findings of urine

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.

    • Abnormal, abnormality, abnormalities
      • urine (constituents)
        • microbiological examination (culture)
    • Abnormal, abnormality, abnormalities
      • urine (constituents)
        • positive culture
    • Findings, abnormal, inconclusive, without diagnosis
      • urine
        • culture positive
    • Positive
      • culture (nonspecific)
        • urine

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

Patient EducationClinical

Urinalysis

A urinalysis is a test of your urine. It is often done to check for a urinary tract infection, kidney problems, or diabetes. You may also have one during a checkup, if you are admitted to the hospital, before you have surgery, or if you are pregnant. It can also monitor some medical conditions and treatments.

Read the full article at MedlinePlus

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

Convert R82.79 to ICD-9-CMHistory

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

ICD-9-CM
791.9 Abn urine findings NEC
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement R82.79 replaces the following previously assigned code(s):

  • R82.7 - Abnormal findings on microbiological examination of urine
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R82.79Overview

Is R82.79 (Abnormal findings on microbiological examination of urine) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other abnormal findings on microbiological examination of urine on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R82.79 group to?

When other abnormal findings on microbiological examination 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 R82.79 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the other abnormal findings on microbiological examination of urine is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R82.79?

Under the General Equivalence Mappings, other abnormal findings on microbiological examination of urine converts to ICD-9-CM 791.9 (abn urine findings NEC). 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.