T83.518D Infection and inflammatory reaction due to other urinary catheter, subsequent encounter

ICD-10-CM T83.518D: Infection and inflammatory reaction due to other urinary catheter, subsequent encounter

ICD-10-CM code T83.518D identifies an infection and inflammatory reaction due to another urinary catheter during a subsequent encounter. Catheter-associated urinary tract infections occur when germs enter the urinary tract through a urinary catheter. These infections represent a frequent type of healthcare-associated infection acquired by patients in health care facilities. 2 5 1

Plain-language overview

A catheter-associated urinary tract infection occurs when germs enter the urinary tract through a urinary catheter and cause an infection. The infection can happen in any part of the urinary tract, including the kidneys, ureters, bladder, and urethra. 2 3

What this code represents

The ICD-10-CM code T83.518D represents an infection and inflammatory reaction due to other urinary catheter during a subsequent encounter. This descriptor distinguishes it from codes for cystostomy, indwelling urethral, and nephrostomy catheters. 5

Coding details

The T83.518D code is part of a specific coding family that includes initial encounter, subsequent encounter, and sequela variations. Other urinary stents have a separate subsequent encounter code, T83.593D, indicating distinct classification for different devices. 5

Documentation considerations

The supplied coding excerpt establishes the specific code descriptor and its encounter type but does not outline the clinical documentation elements needed to support the use of this diagnosis code. 5

Clinical context

Catheter-associated urinary tract infections are one of the most common types of healthcare-associated infections. Urinary tract infections attributed to the use of an indwelling urinary catheter are a frequent infection acquired by patients in health care facilities. 1 2

The most important risk factor for developing a catheter-associated urinary tract infection is prolonged use of a urinary catheter. Many types of bacteria or fungi can cause these catheter-related infections. 2 3

What the sources add

Clinical sources describe catheter-associated infections as a widespread healthcare issue, while the laboratory coding source provides the specific billable diagnosis codes. This combination establishes both the clinical background and the exact alphanumeric classification for the condition. 1 2 5

The clinical sources focus on the nature and risk factors of catheter infections, whereas the coding source strictly lists the alphanumeric codes and their official descriptors without providing clinical context. 2 5

Sources

1. Catheter associated urinary tract infections — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Catheter-associated Urinary Tract Infection (CAUTI) Basics — cdc.gov; accessed 2026-07-25.
3. Catheter-related UTI: MedlinePlus Medical Encyclopedia — medlineplus.gov; accessed 2026-07-25.
4. Guideline for Prevention of Catheter-Associated Urinary ... — cdc.gov; accessed 2026-07-25.
5. ICD 10 — testmenu.com; accessed 2026-07-25.