Billable / Specific Code
ICD-10-CM T50.A12 is the diagnosis code for Poisoning by pertussis vaccine, including combinations with a pertussis component, intentional self-harm. This code falls under the section "Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. 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 T50.A12 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, T50.A12 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
T50.A12 is the ICD-10-CM diagnosis code for "Poisoning by pertussis vaccine, including combinations with a pertussis component, intentional self-harm". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of T50.A12 is T50.A1 ("Poisoning by, adverse effect of and underdosing of pertussis vaccine, including combinations with a pertussis component"). T50.A12 provides a more specific classification within this category.
T50.A12 is located in Section T36-T50 — "Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances" within Chapter 19 of the ICD-10-CM Tabular List.
Use T50.A12 when the patients documented diagnosis matches "Poisoning by pertussis vaccine, including combinations with a pertussis component, intentional self-harm" 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 Poisoning by pertussis vaccine, including combinations with a pertussis component, intentional self-harm is T50.A12.
Yes, T50.A12 can be used as a primary diagnosis code since it is billable and specific.
T50.A12 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, T50.A12 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.