R31.9 - Hematuria, unspecified

Version 2023
No Valid Principal Dx
ICD-10:R31.9
Short Description:Hematuria, unspecified
Long Description:Hematuria, unspecified
Status: Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Symptoms and signs involving the genitourinary system (R30-R39)
      • Hematuria (R31)

R31.9 is a billable ICD-10 code used to specify a medical diagnosis of hematuria, unspecified. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.

Unspecified diagnosis codes like R31.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

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.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Clinical Information

Index to Diseases and Injuries References

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for this diagnosis code are found in the injuries and diseases index:

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
R31.9599.70 - Hematuria NOS

Patient Education


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:

Some conditions may also cause you to have blood or protein in your urine. If you have a urinary problem, see your health care 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


[Learn More in MedlinePlus]

Cystoscopy & Ureteroscopy

Urologists use cystoscopy and ureteroscopy to look inside the urinary tract, find the cause of problems, and sometimes treat them.
[Learn More in MedlinePlus]

Hematuria (Blood in the Urine)

Discusses the conditions that may lead to blood in the urine. Lists diagnostic tests that may be required to find the cause of hematuria.
[Learn More in MedlinePlus]

Kidney Biopsy

Learn about kidney biopsy, a procedure in which a health care professional takes small pieces of tissue from your kidney to look for signs of damage or disease.
[Learn More in MedlinePlus]

Code History