Non-Billable / Non-Specific Code
ICD-10-CM A18 is the diagnosis code for Tuberculosis of other organs. This code falls under the section "Tuberculosis" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where A18 sits in the ICD-10-CM classification helps ensure proper coding:
No, A18 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
A18 is the ICD-10-CM diagnosis code for "Tuberculosis of other organs". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
A18 is located in Section A15-A19 — "Tuberculosis" within Chapter 1 of the ICD-10-CM Tabular List.
A18 has 9 sub-code(s) that provide more specific detail: A18.0, A18.1, A18.2, A18.3, A18.4 and more.
Use A18 when the patients documented diagnosis matches "Tuberculosis of other organs" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Tuberculosis of other organs is A18.
No, A18 is non-billable. Use a more specific sub-code for primary diagnosis billing.
A18 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, A18 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.