ICD-10-CM Diagnosis Code A18.11: Tuberculosis of kidney and ureter

ICD-10-CM Diagnosis Code A18.11:Tuberculosis of kidney and ureter

A18.11 is a billable and specific ICD-10-CM code. Accurate documentation of A18.11 facilitates proper diagnosis, effective management, and correct reimbursement.

This guideline will provide the use, official coding guidelines, and historical background of   A18.11.

What is the ICD-10-CM Diagnosis Code for Tuberculosis of kidney and ureter?

The ICD-10-CM diagnosis code for Tuberculosis of kidney and ureter is A18.11.

Tuberculosis of the kidney and ureter is a form of genitourinary TB where the bacteria infect the kidneys and the tubes (ureters) that carry urine to the bladder.

It is caused by Mycobacterium tuberculosis, usually spreading from the lungs through the blood. Symptoms may include blood in the urine, back or flank pain, fever, and frequent urination.

It can lead to kidney damage if not treated early. Diagnosis is made using urine tests, imaging, and sometimes biopsy.

Treatment requires a long course of anti-TB medications, usually for six to nine months. Early diagnosis helps prevent serious complications.

Proper documentation using A18.11 ensures patients receive appropriate care and enables accurate healthcare reimbursement.

Synonyms

  • Tuberculosis (tb) of kidney
  • Tuberculosis (tb) ureter
  • Tuberculosis of kidney
  • Tuberculosis of ureter

History Background of ICD-10-CM Diagnosis Code A18.11 

The ICD-9-CM system, first introduced in 1979, provided the initial framework for coding diseases and health-related conditions in the United States.

The ICD-9-CM diagnosis code for Tuberculosis of kidney and ureter are:

  • ICD-9-CM 016.00:Tuberculosis of kidney, unspecified
  • ICD-9-CM 016.20:Tuberculosis of ureter, unspecified

These codes remained consistent from 1979 to 2015.

While the ICD-9-CM system offered a basic approach to disease classification, modern healthcare needs more detail and specificity.

To address this, the ICD-10-CM system was launched in 2015, introducing a more comprehensive and accurate coding structure.

The transition from ICD-9-CM to ICD-10-CM significantly improved the ability to document and analyze conditions such as Tuberculosis of kidney and ureter.

The 2025 edition of ICD-10-CM A18.11 became effective on October 1, 2024.

YearICD-10-CM CodeDescription
2020A18.11No Change
2021A18.11No Change
2022A18.11No Change
2023A18.11No Change
2024A18.11No Change
2025A18.11No Change

Final Thought

Proper coding of A18.11 is essential for diagnosing and managing Tuberculosis of kidney and ureter. A clear understanding of its History, and correct usage enhances medical documentation and ensures effective treatment, patient care, supports healthcare planning, and guarantees proper reimbursement for medical services.

About Author
content writer
Dr. Sehrish Bano, CPB & CPC

As a certified professional in both billing and coding, I specialize in streamlining healthcare revenue cycles and ensuring accurate claim submissions. With more than five years of experience serving the healthcare industry in the USA, I bring expertise in coding accuracy, compliance, and reimbursement optimization. My work focuses on reducing errors, improving efficiency, and supporting providers in delivering quality care without administrative hurdles. I am committed to helping healthcare organizations achieve financial stability and compliance through reliable billing and coding practices.

Table of Contents