ICD-10 A18
Non-Billable HeaderTuberculosis of other organs
About ICD-10-CM A18
ICD-10-CM code A18 represents Tuberculosis of other organs. This is a non-billable header code in the Infectious and Parasitic Diseases chapter (block A18). The 2026 edition of ICD-10-CM A18 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Medicare LCD Coverage for A18
Local Coverage Determinations (LCDs) from CMS MACs that list A18 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing A18.
3 Cigna
CPT Codes Commonly Billed with A18
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To A18
Other codes in section A15-A19 (Tuberculosis).
ICD-10 A18, Billing FAQ
Is ICD-10 code A18 billable? +
No, A18 is a non-billable header code. Use a more specific child code from block A18 when submitting claims.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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