Billable / Specific Code
ICD-10-CM T45.4X6 is the diagnosis code for Underdosing of iron and its compounds. 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.
The following conditions should never be coded at the same time as T45.4X6. They are mutually exclusive:
Understanding where T45.4X6 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, T45.4X6 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
T45.4X6 is the ICD-10-CM diagnosis code for "Underdosing of iron and its compounds". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of T45.4X6 is T45.4X ("Poisoning by, adverse effect of and underdosing of iron and its compounds"). T45.4X6 provides a more specific classification within this category.
T45.4X6 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 T45.4X6 when the patients documented diagnosis matches "Underdosing of iron and its compounds" 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 Underdosing of iron and its compounds is T45.4X6.
Yes, T45.4X6 can be used as a primary diagnosis code since it is billable and specific.
T45.4X6 is in Chapter 19 of the ICD-10-CM Tabular List.
Type 1 Excludes for T45.4X6 include: iron deficiency (E61.1).
Yes, T45.4X6 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.