A18.31 is a billable and specific ICD-10-CM code. Accurate documentation of A18.31 facilitates proper diagnosis, effective management, and correct reimbursement.
This guideline will provide the use, official coding guidelines, and historical background of A18.31.
What is the ICD-10-CM Diagnosis Code for Tuberculous peritonitis?
The ICD-10-CM diagnosis code for Tuberculous peritonitis is A18.31.
Peritonitis is the inflammation of the peritoneum, the thin tissue lining the inner wall of the abdomen and covering the abdominal organs.
Tuberculous peritonitis is a type of peritonitis caused by Mycobacterium tuberculosis. It occurs when the bacteria spread from the lungs or lymph nodes to the peritoneal cavity.
Symptoms may include abdominal pain, swelling, fever, weight loss, and fatigue. It is more common in individuals with weakened immunity.
The condition is diagnosed through imaging, fluid analysis, and biopsy. Treatment includes a full course of anti-tuberculosis medications for several months. Early diagnosis and treatment are important to prevent complications
Proper documentation using A18.31 ensures patients receive appropriate care and enables accurate healthcare reimbursement.
Applicable:
- Tuberculous ascites
History Background of ICD-10-CM Diagnosis Code A18.31
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 Tuberculous peritonitis is 014.00.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 Tuberculous peritonitis.
The 2025 edition of ICD-10-CM A18.31 became effective on October 1, 2024.
| Year | ICD-10-CM Code | Description |
| 2020 | A18.31 | No Change |
| 2021 | A18.31 | No Change |
| 2022 | A18.31 | No Change |
| 2023 | A18.31 | No Change |
| 2024 | A18.31 | No Change |
| 2025 | A18.31 | No Change |
Final Thought
Proper coding of A18.31 is essential for diagnosing and managing Tuberculous peritonitis. 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.
