ICD-10 Diagnosis Code R31.2

Other microscopic hematuria

Diagnosis Code R31.2

ICD-10: R31.2
Short Description: Other microscopic hematuria
Long Description: Other microscopic hematuria
This is the 2017 version of the ICD-10-CM diagnosis code R31.2

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
    • Symptoms and signs involving the genitourinary system (R30-R39)
      • Hematuria (R31)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Diagnostic Related Groups
The diagnosis code R31.2 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


  • Microscopic hematuria
  • Persistent hematuria
  • Persistent microscopic hematuria
  • Recurrent microscopic hematuria

Replaced Code Additional informationCallout TooltipReplaced Code
The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2016. This codes was replaced for the FY 2017 (October 1, 2016-September 30, 2017).

This code was replaced in the 2017 ICD-10 code set with the code(s) listed below.
  • R31.21 - Asymptomatic microscopic hematuria
  • R31.29 - Other microscopic hematuria

Information for Patients

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. It swells into a round shape when it is full and gets smaller when empty. If your urinary system is healthy, your bladder can hold up to 16 ounces (2 cups) of urine comfortably for 2 to 5 hours.

You may have problems with urination if you have

  • Kidney failure
  • Urinary tract infections
  • An enlarged prostate
  • Bladder control problems like incontinence, overactive bladder, or interstitial cystitis
  • A blockage that prevents you from emptying your bladder

Some conditions may also cause you to have blood or protein in your urine. If you have a urinary problem, see your healthcare provider. Urinalysis and other urine tests can help to diagnose the problem. Treatment depends on the cause.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • Clean catch urine sample
  • Frequent or urgent urination
  • RBC urine test
  • Urinalysis
  • Urinary catheters
  • Urinary Retention - NIH (National Institute of Diabetes and Digestive and Kidney Diseases)
  • Urinating more at night
  • Urination - difficulty with flow
  • Urination - painful
  • Urine - bloody
  • Urine 24-hour volume
  • Urine odor

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