A18.81

Billable

Tuberculosis of thyroid gland

A18.81 is the ICD-10-CM code for Tuberculosis of thyroid gland. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Parent
A18.8
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect your breathing, heart rate, weight, digestion, and moods. Thyroid diseases cause your thyroid to make either too much or too little of the…

Read more about Thyroid Diseases at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code A18.81?
A18.81 is the ICD-10-CM code for "Tuberculosis of thyroid gland". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A18.81 a billable code?
Yes — A18.81 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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