ICD-10 Diagnosis Code A36.85

Diphtheritic cystitis

Diagnosis Code A36.85

ICD-10: A36.85
Short Description: Diphtheritic cystitis
Long Description: Diphtheritic cystitis
This is the 2017 version of the ICD-10-CM diagnosis code A36.85

Code Classification
  • Certain infectious and parasitic diseases
    • Other bacterial diseases (A30-A49)
      • Diphtheria (A36)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code A36.85 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • 032.84 - Diphtheritic cystitis

  • Bacterial cystitis
  • Diphtheritic cystitis

Information for Patients


Diphtheria is a serious bacterial infection. You can catch it from a person who has the infection and coughs or sneezes. You can also get infected by coming in contact with an object, such as a toy, that has bacteria on it.

Diphtheria usually affects the nose and throat. Symptoms include

  • Sore throat
  • Swollen glands in the neck
  • Fever
  • Weakness

Your doctor will diagnose it based on your signs and symptoms and a lab test. Getting treatment for diphtheria quickly is important. If your doctor suspects that you have it, you'll start treatment before the lab tests come back. Treatment is with antibiotics.

The diphtheria, pertussis, and tetanus vaccine can prevent diphtheria, but its protection does not last forever. Children need another dose, or booster, at about age 12. Then, as adults, they should get a booster every 10 years. Diphtheria is very rare in the United States because of the vaccine.

Centers for Disease Control and Prevention

  • Diphtheria
  • Diphtheria and the Vaccine (Shot) to Prevent It: Information for Parents (Centers for Disease Control and Prevention)
  • Diphtheria and the Vaccine (Shot) to Prevent It: Information for Parents (American Academy of Family Physicians)
  • Diphtheria and the Vaccine (Shot) to Prevent It: Information for Parents (American Academy of Pediatrics)

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Urinary Tract Infections

Also called: UTI

The urinary system is the body's drainage system for removing wastes and extra water. It includes two kidneys, two ureters, a bladder, and a urethra. Urinary tract infections (UTIs) are the second most common type of infection in the body.

You may have a UTI if you notice

  • Pain or burning when you urinate
  • Fever, tiredness, or shakiness
  • An urge to urinate often
  • Pressure in your lower belly
  • Urine that smells bad or looks cloudy or reddish
  • Pain in your back or side below the ribs

People of any age or sex can get UTIs. But about four times as many women get UTIs as men. You're also at higher risk if you have diabetes, need a tube to drain your bladder, or have a spinal cord injury.

If you think you have a UTI it is important to see your doctor. Your doctor can tell if you have a UTI with a urine test. Treatment is with antibiotics.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • Asymptomatic bacteriuria
  • Catheter-associated UTI
  • Cystitis - acute
  • Leukocyte esterase urine test
  • Urinary tract infection - adults
  • Urinary tract infection - children
  • Urine - bloody
  • Urine culture

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