2026 ICD-10-CM Diagnosis Code T83.511AInfection and inflammatory reaction due to indwelling urethral catheter, initial encounter
T83.511A is a billable ICD-10-CM diagnosis code for infection and inflammatory reaction due to indwelling urethral catheter, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 698 through 700. Coders also document this condition as infection and inflammation associated with indwelling urinary catheter. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication of genitourinary device, implant or graft, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Infection and inflammation associated with indwelling urinary catheter
- Infection associated with indwelling urinary catheter
- Inflammation associated with genitourinary device
- Inflammation associated with indwelling urinary catheter
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Complications of genitourinary prosthetic devices, implants and grafts (T83). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Urinary Tract Infections
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.
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Convert T83.511A to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code History & ChangesHistory
Replacement T83.511A replaces the following previously assigned code(s):
- T83.51XA - Infect/inflm reaction due to indwell urinary catheter, init
Questions About T83.511AOverview
Is T83.511A a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report infection and inflammatory reaction due to indwelling urethral catheter, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in T83.511A mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for infection and inflammatory reaction due to indwelling urethral catheter, such as an emergency visit or first evaluation.
What MS-DRG does T83.511A group to?
When infection and inflammatory reaction due to indwelling urethral catheter, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 698, 699, 700, with relative weights from 0.6899 to 1.6544 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of T83.511A?
Under the General Equivalence Mappings, infection and inflammatory reaction due to indwelling urethral catheter, initial encounter converts to ICD-9-CM 996.64 (react-indwell urin cath). The mapping is approximate, so confirm the match fits the documentation.
