T45.A
Header — not billablePoisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugs
The ICD-10 code for poisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugs is T45.A.
T45.A is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 1 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drug (T45.1)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- T45.0Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugsnon-billable header
- T45.1Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugsnon-billable header
- T45.2Poisoning by, adverse effect of and underdosing of vitaminsnon-billable header
- T45.3Poisoning by, adverse effect of and underdosing of enzymesnon-billable header
- T45.4Poisoning by, adverse effect of and underdosing of iron and its compoundsnon-billable header
- T45.5Poisoning by, adverse effect of and underdosing of anticoagulants and antithrombotic drugsnon-billable header
- T45.6Poisoning by, adverse effect of and underdosing of fibrinolysis-affecting drugsnon-billable header
- T45.7Poisoning by, adverse effect of and underdosing of anticoagulant antagonists, vitamin K and other coagulantsnon-billable header
- T45.8Poisoning by, adverse effect of and underdosing of other primarily systemic and hematological agentsnon-billable header
- T45.9Poisoning by, adverse effect of and underdosing of unspecified primarily systemic and hematological agentnon-billable header
- T45.APoisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugsnon-billable header