2025 ICD-10-CM Diagnosis Code T45.AX6D

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Underdosing of immune checkpoint inhibitors and immunostimulant drugs, subsequent encounter

  • T45.AX6D is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Undrdose of immune checkpoint inhibtr/immunostim drugs, subs
  • ICD-10-CM T45.AX6D is a new 2025 ICD-10-CM code that became effective on October 1, 2024.
  • This is the American ICD-10-CM version of T45.AX6D – other international versions of ICD-10 T45.AX6D may differ.

The following code(s) above T45.AX6D contain annotation back-references

 that may be applicable to T45.AX6D:

  • S00-T88  Injury, poisoning and certain other consequences of external causes
  • T36-T50  Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
  • T45.A  Poisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugs

Present On Admission

  • T45.AX6D is considered exempt from POA reporting.

ICD-10-CM T45.AX6D is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 949 Aftercare with cc/mcc
  • 950 Aftercare without cc/mcc

Code History

  • 2025 (effective 10/1/2024): New code
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