Poisoning by antineopl and immunosup drugs, undet, init

This code signifies an accidental or intentional poisoning due to antineoplastic (chemotherapy) or immunosuppressive medications, where the intent is not yet determined. It indicates the patient is in the acute phase of treatment for this poisoning event.

Use this code when a patient presents with adverse effects from antineoplastic or immunosuppressive drugs, and the provider has documented "undetermined" intent (e.g., not clearly accidental or intentional overdose). This code is appropriate for the initial encounter where the patient is actively receiving treatment for the poisoning.

• Always sequence this code first when it represents the primary reason for the encounter.
• Requires an additional code for the specific drug involved (T36-T50 category) to fully describe the poisoning.
• Ensure documentation clearly supports "undetermined" intent and "initial encounter" for appropriate code assignment.