T45.AX4D ICD-10-CM Code: Poisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined, subsequent encounter
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
T45.AX4DPoisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined, subsequent encounter
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where T45.AX4D sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
- 3
Category T45
Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified
- 4
Subcategory T45.AX4
Poisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined
- 5
Code T45.AX4D
Poisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined, subsequent encounter
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for T45.AX4D.
Code first
No “code first” instruction is listed for T45.AX4D.
Use additional code
No “use additional code” instruction is listed for T45.AX4D.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T45.AX4D.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T45.AX4D.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code T45.AX4D mean?
T45.AX4D is the FY 2027 U.S. ICD-10-CM code for “Poisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined, subsequent encounter.”
Is T45.AX4D a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, T45.AX4D has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is T45.AX4D located in ICD-10-CM?
T45.AX4D is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50) (T36–T50), under category T45, Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified and subcategory T45.AX4, Poisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined.
What coding notes are listed for T45.AX4D?
No inclusion terms are listed for T45.AX4D in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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