AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2024 Issue 4; New/Revised ICD-10-CM Codes

Poisoning, Adverse Effect, and Underdosing of Immune Checkpoint Inhibitors and Immunostimulant Drugs

Subcategory T45.A, Poisoning by, adverse effect of, and underdosing of immune checkpoint inhibitors and immunostimulant drugs, has been created, with new codes that identify the use of immune checkpoint inhibitors and immunostimulant drugs. A 7th character is required for these codes to report initial encounter (A), subsequent encounter (D), and sequela (S). T45.AX1, Poisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional)  T45.AX2, Poisoning by immune checkpoint inhibitors and immunostimulant drugs, intentional self-harm  T45.AX3, Poisoning by immune checkpoint inhibitors and immunostimulant drugs, assault  T45.AX4, Poisoning by immune checkpoint inhibitors...

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