A18
⚠ Non-billable
Tuberculosis of other organs
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
A18
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code A18?
ICD-10-CM code A18 represents Tuberculosis of other organs. It is a non-billable header code requiring a more specific subcategory in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A18 billable?
No. A18 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is A18 in?
A18 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
Related codes in the A18 category
A18.0
Tuberculosis of bones and joints
Non-billable
A18.1
Tuberculosis of genitourinary system
Non-billable
A18.2
Tuberculous peripheral lymphadenopathy
Billable
A18.3
Tuberculosis of intestines, peritoneum and mesenteric glands
Non-billable
A18.4
Tuberculosis of skin and subcutaneous tissue
Billable
A18.5
Tuberculosis of eye
Non-billable
A18.6
Tuberculosis of (inner) (middle) ear
Billable
A18.7
Tuberculosis of adrenal glands
Billable
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