A18.3 is a Non-billable and Non-specific ICD-10-CM code.
A18.3 is not used for reimbursement, as more specific and detailed codes are available for precise documentation and billing.
This guideline will provide the use, official coding guidelines, and historical background of A18.3.
What is the ICD-10-CM Diagnosis Code for Tuberculosis of intestines, peritoneum and mesenteric glands?
The ICD-10-CM diagnosis code forTuberculosis of intestines, peritoneum and mesenteric glands is A18.3.
Tuberculosis of the intestines, peritoneum, and mesenteric glands is a form of abdominal tuberculosis caused by Mycobacterium tuberculosis.
It affects the digestive tract, the lining of the abdominal cavity (peritoneum), and the lymph nodes in the abdomen (mesenteric glands).
The infection usually spreads from the lungs through blood or by swallowing infected sputum. Symptoms include abdominal pain, swelling, fever, weight loss, diarrhea or constipation, and fatigue.
Diagnosis is made through imaging, biopsy, and lab tests.Treatment involves a full course of anti-tuberculosis medications, usually lasting 6 to 9 months. Early diagnosis and treatment are important to prevent complications.
Proper documentation using A18.3 ensures patients receive appropriate care and enables accurate healthcare reimbursement.
History Background of ICD-10-CM Diagnosis Code A18.3
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 code for Tuberculosis of te intestines, peritoneum, and mesenteric glands is 014.80.
This code is classified under the broader range of Tuberculosis (010–018) and specifically denotes “Other tuberculosis of intestines, peritoneum, and mesenteric glands, unspecified”, as outlined by the AAPC (American Academy of Professional Coders).
This coding 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 A18.3.
The 2025 edition of ICD-10-CM A18.3 became effective on October 1, 2024.
| Year | ICD-10-CM Code | Description |
| 2020 | A18.3 | No Change |
| 2021 | A18.3 | No Change |
| 2022 | A18.3 | No Change |
| 2023 | A18.3 | No Change |
| 2024 | A18.3 | No Change |
| 2025 | A18.3 | No Change |
Final Thought
Proper coding of A18.3 is essential for diagnosing and managing Tuberculosis of intestines, peritoneum and mesenteric glands. 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.
