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T45.1X4
Non-billable

Poisoning by antineoplastic and immunosuppressive drugs, undetermined

Chapter 19: Injury, poisoning and certain other consequences of external causes

Coding Guidance

T45.1X4 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail. See Related Codes to drill down to more specific billable codes for appropriate reimbursement.

Additional Information from Parent Codes

The following information may apply to this code from its parent codes in the ICD-10 hierarchy. This information is important for proper coding and classification.

Excludes1

4 items

From S00-T88:

From T45.1:

  • poisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugs (T45.A)
  • poisoning by, adverse effect of and underdosing of tamoxifen (T38.6)

Use Additional Code

1 item

From S00-T88:

  • code to identify any retained foreign body, if applicable (Z18.-)

7th Character Notes

4 items

From T45:

  • The appropriate 7th character is to be added to each code from category T45
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela
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