Non-Billable / Non-Specific Code
ICD-10-CM A31 is the diagnosis code for Infection due to other mycobacteria. This code falls under the section "Other bacterial diseases" within Chapter 1 â 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.
The following conditions are not included in A31. If the patient has both, code each condition separately:
Understanding where A31 sits in the ICD-10-CM classification helps ensure proper coding:
No, A31 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
A31 is the ICD-10-CM diagnosis code for "Infection due to other mycobacteria". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
A31 is located in Section A30-A49 â "Other bacterial diseases" within Chapter 1 of the ICD-10-CM Tabular List.
A31 has 5 sub-code(s) that provide more specific detail: A31.0, A31.1, A31.2, A31.8, A31.9.
Use A31 when the patients documented diagnosis matches "Infection due to other mycobacteria" 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 Infection due to other mycobacteria is A31.
No, A31 is non-billable. Use a more specific sub-code for primary diagnosis billing.
A31 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, A31 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.