ICD-10-CM Diagnosis Code A18.54: Tuberculous iridocyclitis

A18.54 is a billable and specific ICD-10-CM code. Accurate documentation of A18.54 facilitates proper diagnosis, effective management, and correct reimbursement.

This guideline will provide the use, official coding guidelines, and historical background of A18.54.

What is the ICD-10-CM Diagnosis Code for Tuberculous iridocyclitis?

The ICD-10-CM diagnosis code for Tuberculous iridocyclitis is A18.54.

Iridocyclitis is the inflammation of the iris and ciliary body in the eye.

Tuberculous iridocyclitis is an eye condition caused by tuberculosis (TB) infection that affects the iris and ciliary body.

It leads to symptoms like eye redness, pain, blurred vision, sensitivity to light, and sometimes floaters. The main cause is the spread of TB bacteria from other parts of the body, usually the lungs, to the eye.

It is more common in people with weak immune systems or a history of TB. Diagnosis includes eye examination and TB tests.

Treatment involves anti-tuberculosis drugs and corticosteroids to reduce inflammation. Early treatment helps protect vision and prevent serious eye damage.

Proper documentation using A18.54 ensures patients receive appropriate care and enables accurate healthcare reimbursement.

Synonyms

Bilateral tb iridocyclitis
Iridocyclitis due to tuberculosis
Iridocyclitis of bilateral eyes caused by mycobacterium tuberculosis
Iridocyclitis of left eye caused by mycobacterium tuberculosis
Iridocyclitis of right eye caused by mycobacterium tuberculosis
Left tb iridocyclitis

History Background of ICD-10-CM Diagnosis Code A18.54

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 codes for Tuberculous iridocyclitis were:

ICD-9-CM 017.30: (Tuberculosis of eye, unspecified)
ICD-9-CM 363.13: (Disseminated choroiditis and chorioretinitis, generalized)

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 iridocyclitis.

The 2025 edition of ICD-10-CM A18.54 became effective on October 1, 2024.

Year	ICD-10-CM Code	Description
2020	A18.54	No Change
2021	A18.54	No Change
2022	A18.54	No Change
2023	A18.54	No Change
2024	A18.54	No Change
2025	A18.54	No Change

Final Thought

Proper coding of A18.54 is essential for diagnosing and managing Tuberculous iridocyclitis. 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.

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.