Poisn by immune chkpt inhibtr/immunostim drugs,slf-hrm,subs

This code signifies a deliberate act of self-poisoning using immune checkpoint inhibitors or other immunostimulant medications. It indicates that the patient is being treated for complications arising from this intentional overdose during a follow-up visit or subsequent admission after initial treatment.

Apply this code when documenting care for a patient who intentionally self-administered an excessive dose of drugs like pembrolizumab, nivolumab, or other agents that boost the immune system, and this encounter is not the initial treatment for the poisoning. This is appropriate for managing ongoing symptoms, monitoring for delayed toxicities, or addressing sequelae of the self-harm event.

• Always sequence this code after the primary diagnosis for the specific manifestation of the poisoning.
• Ensure documentation clearly states "intentional self-harm" and that the encounter is "subsequent."
• Do not use for accidental overdose or adverse effects of properly administered medication.